HISTORy - Silent Drive Inc.

Transcription

HISTORy
In the early 1950’s, when tag axles began to gain popularity, it became evident that they
frequently caused traction problems. In an effort to address this problem, a company was
started in Sioux City, Iowa in 1956. This company’s answer to the problem was to produce
large pulleys and install them between the dual tires of the drive axle and the tag axle. By
connecting them with a large V-belt, the drive axle powered the tag axle.
Since the tag axle was powered by silent belts instead of noisy gears, the company was
named Silent Drive.
In 1972, suspension lifts were edging out V-belt drives in the marketplace. Silent Drive
was already producing axle lifts, both hydraulic and air. Expanding products meant
an expanding facility and in 1974, a facility was constructed in Orange City, Iowa. All
operations were moved to the new facility at that time.
Since then, Silent Drive has been the innovative leader in the suspension industry. Silent
Drive was the first to use the automatic leaf spring lift incorporated into the suspension.
Additionally, the concept of unitizing the suspension to an axle for a complete, ready-toinstall system was pioneered by the professionals at Silent Drive.
The underarm air spring lift concept, developed over ten years ago by the Silent Drive
engineering team, is being adopted by nearly every suspension manufacturer in the
nation. Commitment to quality keeps Silent Drive one step ahead of it’s competition.
Silent Drive has grown from a regional manufacturer supplying only a few products,
primarily to the agricultural market, to an industry leader manufacturing air suspension
for liftable tags and pushers, drive axle suspensions, as well as primary and auxiliary lift
axles on trailers using state-of-the-art technology including Pro-E software and Finite
Element Analysis for design and testing.
Expect the most complete product line, including capacity’s from 10,000 to 30,000 pounds
with axle lifts from 6 to 18 inches, our patented Uroflex pull arm bushings, and excellent
customer service from the industry leader. Expect only the best from Silent Drive.
Silent Drive Inc.
130 Arizona Place SW
Orange City, IA 51041
(800) 658-3866
www.silentdrive.com
TAbLE OF CONTENTS
SELF-STEER UNITS
NEW
UF-1008-FA
8,000 lbs
Pusher or Tag Axle ................................. 1
NEW
UF-1013-FA
13,200 lbs
Fabricated Axle, Pusher or Tag Axle .......... 2
NEW
UF-1013-IB
13.200 lbs
I-Beam Axle, Pusher or Tag Axle .............. 3
NEW
UF-1000
Inboard/Outboard Configurations................................ 4
AAS-724
20,000 lbs
I-Beam Axle, Pusher or Tag Axle .............. 5
AAS-721
13,200 lbs
Pusher or Tag Axle ................................. 6
AAS-721
Inboard/Outboard Configurations................................ 7
AAS-740
13,000 lbs
Pusher Axle, Low Frame Trucks ................ 8
MAXLE
12,000 lbs
Hydraulic Raised/Lowered Air Ride ........... 9
NON-STEER UNITS
AA-115
13,500 lbs
High Lift, Pusher or Tag Axle...................10
AA-135
19,500 lbs
High Lift, Tag Axle .................................11
AA-230
13,200 lbs
Pusher or Tag Axle ................................12
AA-230
Inboard/Outboard Configurations...............................13
AA-240
10,000 lbs
Low Frame, Pusher or Tag Axle ...............14
AA-1455
20,000 lbs
AA-1355
20,000 lbs
TRAILER SUSPENSIONS
AA-270-TR
14,000 lbs
AA-290-TR
14.000 lbs
AA-1255-TR
20,000 lbs
ATR-400 Series
25,000 lbs
Primary Air Ride Suspension ...................20
DRIVE AXLE SUSPENSIONS
ALD-320
8,000 – 12,000 lbs
Capacity Drive Axle Suspension ........21
ALD-330
11,000 – 23,000 lbs
Capacity Drive Axle Suspension ........22
CHARTS AND GUIDES
Federal Bridge Table .........................................................................23
Air Pressure Load Chart ....................................................................24
Loaded Tire Size Chart ......................................................................25
Features & Benefits ..........................................................................26
Ordering Information (Truck) .............................................................27
Ordering Information (Trailer) ............................................................28
Air Controls and Kits .........................................................................29
SILENT DRIVE
ULTRA FLEX SERIES
UF-1008-FA
PARALLELOGRAM
STEER LIFT AXLE
FRAME ADJUSTMENT:
Adjustable from 33.5” to 34.5” Frame
APPLICATION: Pusher(s) or Tag, Utilizes Fabricated Steer Axle
(single tires ONLY)
SUSPENSION CAPACITY: 13,200 lbs
AXLE CAPACITY: 8,000 lbs
APPLICATION CHART (to determine available lift): 17.5 Wheel and Tire
AVAILABLE LIFT
1.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
24
14.0 (LOADED)
25
26
RIDE HEIGHT: 13”-16”
27
28
29
30
5
6
7
8
31
32
33
34
35
When lifted, the top of the axle tube is 8 inches below the bottom of the frame.
DO NOT install or operate suspension if parameters meet in a shaded box. To find the
Loaded Tire Radius from a given tire size, refer to tire charts. Suspension capacity may
be limited by tire capacity.
IMPORTANT: If the suspension will be operated in the tag position, Silent Drive
recommends not exceeding an axle spacing of 60 inches between the nearest drive axle
and the lift axle. Contact Silent Drive before exceeding these limitations.
1
SILENT DRIVE
ULTRA FLEX SERIES
UF-1013-FA
PARALLELOGRAM
STEER LIFT AXLE
FRAME ADJUSTMENT:
APPLICATION: Pusher(s) or Tag, Utilizes Fabricated Steer Axle,
Inboard and Outboard Configurations Available
(single tires ONLY)
APPLICATION CHART (to determine available lift):
1.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
24
25
26
27
17.0 (LOADED)
28
29
30
31
5
6
7
8
5
6
7
8
5
6
7
18.0 (LOADED)
19.0 (LOADED)
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
24
25
17.0 (LOADED)
27
28
29
5
6
7
8
5
6
7
8
5
6
7
19.0 (LOADED)
5.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
33
34
8
26
18.0 (LOADED)
32
30
31
32
33
34
8
24
25
26
27
5
6
7
8
28
5
6
7
8
5
6
7
29
30
31
32
33
34
8
When lifted, the top of the axle beam is 7 inches below the bottom of the frame.
2
SILENT DRIVE
ULTRA FLEX SERIES
UF-1013-Ib
PARALLELOGRAM
STEER LIFT AXLE
FRAME ADJUSTMENT:
APPLICATION: Pusher(s) or Tag, Utilizes I-Beam Steer Axle,
Inboard and Outboard Configurations Available
(single tires ONLY)
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
24
25
17.0 (LOADED)
27
28
29
5
6
7
8
5
6
7
8
5
6
7
18.0 (LOADED)
19.0 (LOADED)
5.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
26
30
31
32
33
34
8
24
25
26
27
28
5
6
7
8
5
6
7
8
5
6
7
29
30
31
32
33
34
8
3
ULTRA FLEX SERIES
CONFIGURATION OPTIONS
INBOARD CONFIGURATION FOR ROLLOFFS
AND HOISTS WITH OUTBOARD CYLINDERS
OUTBOARD CONFIGURATIONS FOR HOISTS
WITH INBOARD CYLINDERS
4
SILENT DRIVE
AAS-724
PARALLELOGRAM
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher or Tag, Utilizes Front Steering Axle, Requires Dual
Torque Arms
(single tires ONLY)
SUSPENSION CAPACITY: 20,000 lbs AXLE CAPACITY: 3.5” DROP: 20,000 lbs
AVAILABLE LIFT
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
25
26
27
28
29
4
5
6
7
8
4
5
6
7
8
4
5
6
7
8
4
5
6
7
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
30
31
32
33
34
35
36
8
When lifted, the top of the axle beam is 7.5 inches below the bottom of the frame.
5
SILENT DRIVE
AAS-721
PARALLELOGRAM
AIR LIFT
AIR SUSPENSION
APPLICATION: Dual Pusher or Tag, Utilizes Front Steering Axle, Requires Dual
Torque Arms
(single tires ONLY)
AVAILABLE LIFT
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
26
27
17.0 (LOADED)
28
29
30
6
7
8
6
7
8
6
7
8
6
7
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
AVAILABLE LIFT
5.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
24
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
25
31
32
33
34
35
36
37
8
26
27
28
29
30
6
7
8
6
7
8
6
7
8
6
7
31
32
33
34
35
8
When lifted, the top of the axle beam is 7.75 inches below the bottom of the frame.
6
AAS-721
ALL DIMENSIONS REFERENCE STANDARD 34 INCH FRAME WIDTH
OUTBOARD CONFIGURATION
INBOARD CONFIGURATION
FOR ROLLOFFS AND HOISTS WITH OUTBOARD CYLINDERS
7
SILENT DRIVE
AAS-740
PARALLELOGRAM
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher or Tag, Utilizes Front Steering Axle
(single tires ONLY)
AVAILABLE LIFT
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
24
17.0 (LOADED)
25
26
5
6
18.0 (LOADED)
5
19.0 (LOADED)
27
28
5
AVAILABLE LIFT
5.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
24
5
6
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
5
30
31
32
33
34
35
6
5
25
29
6
20.0 (LOADED)
17.0 (LOADED)
26
27
6
28
29
30
31
32
33
34
6
5
6
5
6
8
MAXLE SERIES
HYDRAULICALLY RAISED AND LOWERED AIR RIDE SUSPENSION
FEATURES:
SUSPENSION CAPACITY: 12,000 lbs suspension capacity
9
BRIDGE:
Extends the overall bridge of a truck to allow up to 5 tons
additional payload
MOUNTING:
Attaches to pre-engineered dump body
AIR RIDE:
Air ride suspension system for smooth and stable ride for
maximum driver comfort and confidence
TRACK:
Wide track steer axle in for driver visibility and stability
P.T.O.:
Operates with standard P.T.O.
CUSTOMIZATION:
Other MAXLE variations available upon request
SILENT DRIVE
AA-115
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher or Tag, Non-Steer, High Frame or Low Profile Tires
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
24
25
26
27
28
29
6
7
8
9
10
11
6
7
8
9
10
11
6
7
8
9
10
11
6
7
8
9
10
11
6
7
8
9
10
11
6
7
8
9
10
11
6
7
8
9
10
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
30
31
32
33
34
35
11
When lifted, the top of the axle tube is 0.5 inch below the bottom of the frame.
10
SILENT DRIVE
AA-135
AIR LIFT
AIR SUSPENSION
APPLICATION: TAG ONLY, Non-Steer, High Frame or Low Profile Tires
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
25
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
26
27
28
29
30
31
32
33
34
35
7
8
9
10
11
7
8
9
10
11
7
8
9
10
11
7
8
9
10
11
7
8
9
10
11
7
8
9
10
11
7
8
9
10
36
11
When lifted, the top of the axle tube is 1.5 inches below the bottom of the frame.
11
SILENT DRIVE
AA-230
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher or Tag, Utilizes Front Steering Axle
AVAILABLE LIFT
3.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
25
17.0 (LOADED)
26
27
28
29
30
6
7
8
7*
8*
6
7
8
7*
8*
6
7
8
7*
8*
6
7
8
7*
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
AVAILABLE LIFT
5.5” AXLE DROP
LOADED FRAME HEIGHT
TIRE RADIUS
23
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
31
32
33
34
35
36
8*
24
25
26
27
28
29
30
6
7
8
7*
8*
6
7
8
7*
8*
6
7
8
7*
8*
6
7
8
7*
31
32
33
34
8*
*Suspension mounted down 2 inches (see installation instructions)
12
AA-230
ALL DIMENSIONS REFERENCE STANDARD 34 INCH FRAME WIDTH
INBOARD CONFIGURATION
FOR ROLLOFFS AND HOISTS WITH OUTBOARD CYLINDERS
OUTBOARD CONFIGURATION
FOR ROLLOFFS AND HOISTS WITH INBOARD CYLINDERS
13
SILENT DRIVE
AA-240
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher, Non-Steering, Low or Drop Frames, Low Profile Tires
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
22
23
24
5
6
7
5
6
7
5
6
7
5
6
7
5
6
7
5
6
7
5
6
7
5
6
14.0 (LOADED)
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
25
26
27
28
29
30
31
32
33
7
When lifted, the top of the axle tube is 0.5 inch below the bottom of the frame.
14
SILENT DRIVE
AA-1455
AIR LIFT
AIR SUSPENSION
APPLICATION: Pusher or Tag, Non-Steerable
Provides maximum roll stability
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
23
24
25
26
27
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
28
29
30
31
32
33
34
6*
15
SILENT DRIVE
AA-1355
AIR LIFT
AIR SUSPENSION
APPLICATION CHARTS (to determine available lift):
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
26
27
28
29
30
5
6
7
6*
7*
5
6
7
6*
7*
5
6
7
6*
7*
5
6
7
6*
7*
5
6
7
6*
7*
5
6
7
6*
7*
5
6
7
6*
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
31
32
33
34
35
36
37
7*
16
SILENT DRIVE
AA-270-TR
AIR LIFT
AIR SUSPENSION
APPLICATION: Trailer, Non-Steering, High Frame or Low Profile Tires
where space is limited
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
26
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
27
28
29
30
31
32
33
34
35
36
37
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
Loaded Tire Radius from a given tire size, consult tire charts. Suspension capacity may
17
SILENT DRIVE
AA-290-TR
AIR LIFT
AIR SUSPENSION
APPLICATION: Trailer, Non-Steering, High Frame or Low Profile Tires
where space is limited
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
29
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
30
31
32
33
34
35
36
37
38
39
40
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
Loaded Tire Radius from a given tire size, consult tire charts. Suspension capacity may
18
SILENT DRIVE
AA-1255-TR
AIR LIFT
AIR SUSPENSION
SUSPENSION CAPACITY: 20,000 lbs and 25,000 lbs
AVAILABLE LIFT
LOADED FRAME HEIGHT
TIRE RADIUS
33
34
35
36
37
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
6*
4
5
6
5*
15.0 (LOADED)
16.0 (LOADED)
17.0 (LOADED)
18.0 (LOADED)
19.0 (LOADED)
20.0 (LOADED)
21.0 (LOADED)
RIDE HEIGHT: 18”-20”**
38
39
40
41
42
43
6*
**Also available in other ride heights.
When lifted, the top of the axle tube is 11 inches below the bottom of the frame.
19
ATR-400 SERIES
PRIMARy TRAILER
AIR SUSPENSION
FEATURES
AIR RIDE:
Provides a smooth ride and maximum cargo protection
RIDE HEIGHTS:
4”–22”
AXLE:
71.5” to 77.5” Track Straight Non-Steer
AXLE TRAVEL:
6” minimum
OPTIONS:
Air Disk Brakes available on 6”–9” ride heights
Yoke Mounts
LOW MAINTENANCE:
Durable UroFlex urethane bushings at main pivot point.
No lubrication required. No bushings at axle.
20
ALD-320
LIGHT DUTy
DRIVE AXLE AIR SUSPENSION
FEATURES
AIR RIDE:
Designed to provide a soft, smooth, yet stable ride for maximum
driver comfort and cargo protection.
VERSATILITY:
The ALD-320 suspension can be adapted to many light-duty vehicles
and are factory built for each application. This eliminates costly
changes during installation and assures proper operation. The
suspension also takes advantage of pre-existing holes in the frame
to speed installation. This is NOT a conversion kit, it is a complete
unit.
QUALITY BUILT: Lightweight construction, yet heavy-duty performance. Trailing arms
are tapered leaf springs to reduce weight and isolate road shock. Air
springs are reversible sleeve-type to provide a very low spring rate
for a better ride. Axle movement is controlled by externally mounted
guide brackets and torque rods allowing positive axle alignment.
All pivot points have urethane bushings to provide controlled flex,
eliminate lubrication and reduce maintenance.
CAPACITY:
Up to 13,500 lbs
AXLE TRAVEL:
6 inches, 3 inches up and 3 inches down
WARRANTY:
All structural components are warranted by Silent Drive for 5 years
or 50,000 miles, whichever occurs first.
21
ALD-330
MEDIUM DUTy
DRIVE AXLE AIR SUSPENSION
FEATURES
AIR RIDE:
Designed to provide a soft, smooth, yet stable ride for maximum
driver comfort and cargo protection.
VERSATILITY:
The ALD-330 suspension can be adapted to many medium-duty
vehicles and are factory-built for each application. This eliminates
costly changes during installation and assures proper operation.
This is NOT a conversion kit, it is a complete unit.
QUALITY BUILT: Lightweight construction, yet heavy-duty performance. Trailing arms
are tapered leaf springs to reduce weight and isolate road shock. Air
springs are reversible sleeve-type to provide a very low spring rate
for a better ride. Axle movement is controlled by tracking and torque
rods, allowing positive axle alignment. All pivot points have urethane
bushings to provide controlled flex, eliminate lubrication and reduce
maintenance.
CAPACITY:
Up to 23,000 lbs are available
AXLE TRAVEL:
6 inches, 3 inches up and 3 inches down
WARRANTY:
All structural components are warranted by Silent Drive for 5 years
or 50,000 miles, whichever occurs first.
22
FEDERAL bRIDGE TAbLE
Permissible gross loads for vehicles in regular operation
Based on weight formula W=500 (LN/N-1 + 12N + 36) modified1
Distance in feet
between the
extremes of any
group of 2 or
more consecutive
axles
Tandem Axle Weight
{
be-(Bridge Table B)
Maximum load in pounds carried on any group of 2 or more consecutive axles2
2 AXLES
4
5
6
7
8 and less
More than 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
34,000
34,000
34,000
34,000
34,000
38,000
39,000
40,000
3 AXLES
4 AXLES
34,000
42,000
42,500
43,500
44,000
45,000
45,500
46,500
47,000
48,000
48,500
49,500
50,000
51,000
51,500
52,500
53,000
54,000
54,500
55,500
56,000
57,000
57,500
58,500
59,000
60,000
50,000
50,500
51,500
52,000
52,500
53,500
54,000
54,500
55,500
56,000
56,500
57,500
58,500
58,500
59,500
60,000
60,500
61,500
62,000
62,500
63,500
64,000
64,500
65,500
66,000
66,500
67,500
68,000
68,500
69,500
70,000
70,500
71,000
72,000
72,500
73,500
74,000
74,500
75,500
76,000
76,500
77,500
78,000
78,500
79,500
80,000
{ }
Exception
Interstate Gross
Weight Limit
}
5 AXLES
6 AXLES
7 AXLES
8 AXLES
9 AXLES
58,000
58,500
59,000
60,000
60,500
61,000
61,500
62,500
63,000
63,500
64,000
65,000
65,500
66,000
66,500
67,500
68,000
68,500
69,000
70,000
70,500
71,000
71,500
72,500
73,000
73,500
74,000
75,000
75,500
76,000
76,500
77,500
78,000
78,500
79,000
80,000
80,500
81,000
81,500
82,500
83,000
83,500
84,000
85,000
85,500
66,000
66,500
67,000
68,000
68,500
69,000
69,500
70,000
71,000
71,500
72,000
72,500
73,000
74,000
74,500
75,000
75,500
76,000
77,000
77,500
78,000
78,500
79,000
80,000
80,500
81,000
81,500
82,000
83,000
83,500
84,000
84,500
85,000
86,000
86,500
87,000
87,500
88,000
89,000
89,500
90,000
74,000
74,500
75,000
75,500
76,500
77,000
77,500
78,000
78,500
79,000
80,000
80,500
81,000
81,500
82,000
82,500
83,500
84,000
84,500
85,000
85,500
86,000
87,000
87,500
88,000
88,500
89,000
89,500
90,500
91,000
91,500
92,000
92,500
93,000
94,000
94,500
95,000
82,000
82,500
83,000
83,500
84,500
85,000
85,500
86,000
86,500
87,000
87,500
88,500
89,000
89,500
90,000
90,500
91,000
91,500
92,500
93,000
93,500
94,000
94,500
95,000
95,500
96,500
97,000
97,500
98,000
98,500
99,000
99,500
100,500
90,000
90,500
91,000
91,500
92,000
93,000
93,500
94,000
94,500
95,000
95,500
96,000
96,500
97,500
98,000
98,500
99,000
99,500
100,000
100,500
101,000
102,000
102,500
103,000
103,500
104,000
104,500
105,000
105,500
1
Permissible loads are computed to the nearest 500 pounds. The modification consists in limiting the maximum load on any single axle to
20,000 pounds.
2
The following loaded vehicles must not operate over H15-44 bridges: 3-S2 (5 axles) with wheelbase less than 38 feet; 2-S1-2 (5 axle) with
wheelbase less than 45 feet; 3-3 (6 axle) with wheelbase less than 45 feet; and 7-, 8- and 9-axle vehicles regardless of wheelbase.
23
AIR PRESSURE LOAD CHART
For use in determining the approximate air pressure required in
the air springs to obtain a specific load on the axle
AIR PRESSURE (psi)
LOAD (lbs)
at ground
1255
1355
1455
724
UF1013
UF1008*
115
740
5000
20
28
33
6000
25
35
7000
31
8000
36
9000
41
10000
11000
135
721
727
230
270
290
240
22
28
26
45
42
28
35
33
56
42
51
34
42
40
68
49*
60
39
49
47
80
57
68
45
57
54
92
47
64
77
51
64
61
103
52
71
86
57
71
68
12000
57
78
95
63
78
75
13000
62
86
102
68
86
82
14000
68
93
112
74
93
88
15000
73
100
80
100
96
16000
78
85
17000
84
91
18000
89
97
19000
94
103
20000
100
*UF1008 suspension is limited to a 8,000 lb load rating, therefore the pressure in the air
spring is limited to 49 psi. Requires an AC2006 Air Control.
The values given above are based on the ride height at the middle of the ride height
range. The actual figures may vary depending on the actual suspension mounting height.
The values given above are also based on an estimated weight of the axles, wheels and
tires of 1200 lbs. Air pressure required will vary based on the axle, wheels and tires
used.
To obtain an accurate air pressure reading for a specific load, the suspension must be
calibrated on a load scale.
Silent Drive assumes no responsibility as to the accuracy of the weight of loads based on
the above chart.
24
LOADED TIRE SIZE CHART
For use in calculating the mounting height of Silent Drive air suspensions
TUBE TYPE
TUBELESS
ISO (METRIC)
LOADED TIRE RADIUS
215/75R17.5
14.0
9R17.5
225/70R19.5
15.0
10R17.5
*245/70R19.5
15.5
*265/70R19.5
*285/70R19.5
16.0
7.5R15
8.5R17.5
8.25R15
14.5
10.00R15
7.5R20
16.5
8R22.5
255/70R22.5
245/75R22.5
235/80R22.5
17.0
17.5
8.25R20
9R22.5
265/75R22.5
255/80R22.5
18.0
18.5
10R22.5
295/75R22.5
275/80R22.5
19.0
10.00R20
11R22.5
295/80R22.5
315/80R22.5
385/65R22.5
285/75R24.5
275/80R24.5
19.5
11.00R20
12R22.5
12.00R20
10.00R22
13R22.5
11R24.5
425/65R22.5
11.00R22
12R24.5
445/65R22.5
12.00R22
13R24.5
9.00R20
20.0
20.5
21.0
21.5
*For use only on I-beam axle. Requires special hub piloted wheel, 20” Unimount drum
and 15” brakes. These tires will not work with 16.5” brakes. Check ground clearance
before using these smaller tires.
25
FEATURES & bENEFITS
1.
Patented UroFlex Bushings
A patented, free rotation design, bonds the urethane to the outer sleeve but allows
the inner sleeve to rotate. Because of the free rotational design, shear and torsional
stress on the bushings is eliminated. (Rubber bushings, on the other hand, are
bonded to both the outer and inner sleeve and when the arm rotates, the bushings
material is twisted and contorted resulting in high stresses causing premature
bushing failure.) In addition, Urethane is a superior polymer which does not
breakdown over time from exposure to petroleum products, acids, salts or ozone
which damage rubber. Urethane allows the suspension to flex in uneven terrain and
cornering, yet resists vehicle roll.
2.
High Pivot Point
Silent Drive engineers a higher pivot point into most of our pull arms offering
unmatched stability during cornering and while operating over uneven terrain. In
addition, a high pivot point offers a drastic reduction in frame rail stress. In most
cases, our pivot points are as much as 8” to 10” closer to the frame rail. Having the
pivot point that close to the frame helps to eliminate most frame rail maintenance.
3. Short Mounting Envelope
Silent Drive offers some of the shortest mounting envelopes in the industry.
Depending on the application, a Silent Drive suspension will often fit when other
suspensions are too large.
4.
Under Arm Lift
Most Silent Drive suspensions incorporate an under arm positive lift. In addition
to quick lift response, an under arm lift offers superb driver comfort and reduced
system maintenance.
5.
Huck Bolted Pivot Points
Most Silent Drive suspensions incorporate huck bolted pull arm and axle seat
bushings. Huck bolting is recognized in the industry for it’s durability and lack of
maintenance.
6.
Double Coil Spring Shocks
All steerable Silent Drive suspensions incorporate double coil spring shocks for
unsurpassed stability and driver control.
7.
Complete Mounting and Installation Kits
Silent Drive has kits available for quick and easy installation. These kits include,
but are not limited to: mounting hardware, air lines, valves and brake fittings.
Depending on the suspension, Silent Drive offers everything you need to do the
complete installation.
8.
Totally Unitized Axle and Suspension
Silent Drive offers our suspensions and axles totally unitized for reduced installation
time. A Unitized system includes a regulated inside cab control panel, brake
protection check valve, two quick release valves, standard brakes, wheels or hubs,
drums, one lower cross member and auto slack adjusters.
9.
Full Line Supplier
Silent Drive offers a full line of air up/air down suspensions. In addition to the
steerable and non-steerable pushers and tags, Silent Drive offers drive axle, primary
trailer and liftable trailer suspensions and parallelogram suspensions.
10. Custom Suspension Design
Silent Drive offers internal capabilities to design and manufacture custom
suspensions to meet customer needs. Our engineers have the ability to design
around customer and market needs.
11. Customer Service
Silent Drive offers unsurpassed customer service. These services include nationwide
distribution and 24 hour parts order turn-around. In addition, Silent Drive offers
full-time technical help for customers.
26
ORDERING INFORMATION
(TRUCK)
The following information is required for ordering Liftable Air Suspensions for installing
on trucks or tractors. Obtaining as much of this information as possible in advance will
speed the ordering and manufacturing process.
Application:
Pusher_____ Tag_____ 2nd axle_____ 3rd axle_____ 4th axle_____
For Stock_____
Axle Spacing:
______________ from nearest drive axle to liftable axle
Req’d Capacity:
______________
Frame Width:
Indicate on the drawing below. Include any frame reinforcement and
or gloving
Frame Height:
Indicate on the drawing below, both loaded and unloaded frame
heights
Tire Size:
Indicate on the drawing below the size of the tire to be used on the
liftable axle; also indicate the loaded tire radius if known
Driveshaft
Location
(PUSHER ONLY): Indicate on the drawing below the distance from the bottom of the
frame to the bottom of the driveshaft in the lowest position, at the
location of the liftable axle
Hubs & Drums:
Cast Spoke _____20” _____15”
Ten Hole Disc _____20” _____15”
______Budd (stud piloted)
______Hub Piloted
______Short stud
______Long stud
Brakes:
Air_____
Self-Steering:
Yes_____
Special
Requirements:
______________________________________________________
27
ORDERING INFORMATION
(TRAILER)
The following information is required for ordering Liftable Air Suspensions for installing
on trailers. Obtaining as much of this information as possible in advance will speed the
ordering and manufacturing process.
Application:
Pusher_____ Tag_____ 2nd axle_____ 3rd axle_____ 4th axle_____
For Stock_____
Axle Spacing:
______________ from nearest drive axle to liftable axle
Req’d Capacity:
______________
Frame Width:
Indicate on the drawing below. Include any frame reinforcement and
or gloving
Frame Height:
Indicate on the drawing below, both loaded and unloaded frame
heights
Tire Size:
Indicate on the drawing below the size of the tire to be used on the
liftable axle; also indicate the loaded tire radius if known
Hubs & Drums:
Cast Spoke _____20” _____15”
Ten Hole Disc _____20” _____15”
______Budd (stud piloted)
______Hub Piloted
______Short stud
______Long stud
Brakes:
Air_____
Self-Steering:
Yes_____
Special
Requirements:
______________________________________________________
28
AIR CONTROLS
SD-812
Inside cab control unit for non-steer
air up/air down suspension systems
AC-2000
Outside cab regulator with in-cab switch for operation
Use for self-steer suspensions when auto-reverse is needed or
for non-steer suspensions when outside regulator is required.
MOUNTING KITS
FK-2000 .........................Air lines and fittings for AC-2000 Controller
SD-865 ............................ Air lines and fittings for SD-812 Controller
SD-866 ...............................................Mounting bolts and lock nuts
SD-847 ..................... Air lines and fittings with R-12 valve for brakes
AT-100K ..................................................................... Air tank kit
SLD-UPP .............................................................. Pre-Plumbed kit

HISTORy - Silent Drive Inc.

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