Ridewell RUL-245 is a steerable auxiliary lift axle suspension designed for trailer applications requiring additional load support and axle lift capability. The system provides a wide ride height range, controlled lift operation, and durable components for reliable on-highway performance.
Key Features
Steerable auxiliary lift axle suspension
13,200 lb suspension capacity rating
SpeedSet axle alignment feature
Maintenance-free shear-type pivot bolt
Compatible with straight or drop center axles
Compatible with disc and drum brake systems
Technical Specifications
Model
RUL-245-7.0/12.0-13K
Application
Trailer
Suspension Type
Auxiliary Lift Axle, Air Ride
Steerability
Steerable
Capacity
13,200 lbs
Ride Height Range
11.0" to 20.0"
Torque Specifications
Fastener
Torque Value
1/2"-13 NC Fasteners
25 ft-lb
3/8"-16 NC Fasteners
25 ft-lb
3/4"-16 NF Fasteners
500 ft-lb (traditional hardware)
7/8"-9 NC Pivot Fastener
Torque until Torx head shears off
Ride Height / Travel
Ride Height
No Spacer
1" Spacer
2" Spacer
11.0"
Up 4.5" / Down 5.0"
-
-
12.0"
Up 5.5" / Down 4.0"
Up 4.5" / Down 5.0" (6040092)
-
13.0"
Up 6.5" / Down 3.0"
Up 5.5" / Down 4.5" (6040092)
Up 4.5" / Down 5.0" (6040093)
Included Components (Bill of Materials)
Item
Qty
Part Number
Description
1
1
1002B09611G
Air Spring 2B9-611 (LH)
2
1
1002B09614G
Air Spring 2B9-614 (RH)
3
2
1003B12339G
Air Spring 3B12-339
4
1
1130048
Pivot Bolt, Round Head, Shear-Type 7/8"-9 NC
5
4
1140674B105
HHCS 3/8"-16 NC x 1", Grade 5
6
4
1150011
Locknut 3/4"-16 NF, Nylon Insert
7
1
1150067
Locknut 7/8"-9 UNC, Flanged
8
2
1150042
Locknut 1/2"-13, Whiz-Lock Flanged
9
2
1150555B112
Locknut 1/2"-13 NC, Nylon Insert
10
4
1160011
Lock Washer 3/8", Internal Tooth
11
1
1160036
Washer 7/8" F436
12
2
1167680B000
Wear Washer, UHMW-PE
13
1
3360128
Hanger Assembly, LH
14
1
3360129
Hanger Assembly, RH
15
2
3450129
Air Spring Mounting Bracket
16
1
5970424
Beam / Bushing Assembly, LH
17
1
5970425
Beam / Bushing Assembly, RH
18
1
7003095
Alignment Washer, 3.63" OD
19
1
7003096
Adjuster Plate, 3.63" OD
Installation Notes
Axle alignment must be performed in accordance with SAE or TMC recommended standards.
Pivot bolt must be torqued until the Torx head shears off.
Customer-furnished crossmembers are required in recommended locations.
Fasteners must be re-torqued after 6,000 miles and every 30,000 miles thereafter.
Maintenance Notes
Inspect air springs, bushings, and fasteners during routine service intervals.
Do not re-torque shear-type pivot fasteners.
Bushing replacement must follow Ridewell-approved procedures and tools.
Warranty Notes
Failure to observe installation and maintenance instructions may void the warranty.
