CAT 1T-1428 RETAINER

CAT 1T-1428 (1T1428) is a Caterpillar original bearing retainer, adapted for positioning and axial fixation of the transmission torque converter end bearing. The following is precise information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 1T-1428 Bearing Retainer

Part Type: Transmission torque converter end bearing axial retainer, used to limit axial movement of the bearing, ensuring bearing coaxiality and transmission system stability

Material: 42CrMo alloy structural steel, surface anodized black finish, hardness HRC32-38, tensile strength ≥980MPa

Key Dimensions: Outer diameter 135.00 mm, inner diameter 95.00 mm, thickness 18.00 mm, bolt hole distribution circle diameter 115.00 mm, number of bolt holes: 6, hole diameter 10.50 mm, positioning stop diameter 102.00 mm, stop depth 5.00 mm mm

Structural Features: Flange-type structure with a locating stop; 6 bolt holes on the flange face; the center hole is used for locating the inner ring of the bearing; the stop mates with the outer ring end face of the bearing to achieve axial limiting; no lubrication groove or oil hole.

Compatible Structure: Matches the input shaft bearing of the gearbox torque converter and the mounting surface of the torque converter housing for axial positioning and fixing of the bearing.

Applicable Operating Conditions: Medium to low speed, medium load; suitable for normal temperature (≤120℃), low vibration, and oil bath lubrication environments in the gearbox compartment.

Compatible Models:
CAT 950G/962G wheel loaders (gearbox torque converter end bearing fixing)
CAT 416E/420E backhoe loaders (gearbox front housing bearing positioning area)
CAT 315DL/318DL excavators (slewing gearbox input shaft bearing fixing)
CAT 140H/160H graders (gearbox torque converter end bearing axial limiting assembly)

Installation and Fitting Points: The fixing device and the torque converter housing are bolted together; bolt specifications… M10×1.5 bolts, tightening torque 35±3 N・m, tighten evenly in 2-3 steps diagonally.

The locating stop and the bearing outer ring end face are clearance fit (clearance 0.05-0.10 mm), and the center hole and the bearing inner ring are transition fit (fit tolerance H7/h6), ensuring no axial movement and smooth operation of the bearing.

Before installation, clean the retainer, bearing, and housing mounting surfaces, checking the retainer for cracks and deformation, and ensuring the threaded holes are undamaged and free of stripping.

During installation, first align the retainer stop with the bearing outer ring end face, then tighten with bolts. The clearance between the retainer flange face and the housing mounting surface should be ≤0.05 mm, with no misalignment.

Post-installation inspection: Bearing axial clearance ≤0.08 mm, no abnormal noise during rotation, and no excessive radial runout (≤0.05 mm) on the torque converter input shaft.