CAT 9R-1606 BEARING

CAT 9R-1606 is a Caterpillar original single-row cylindrical roller bearing (Needle Roller Bearing with Cage), suitable for engine valve mechanisms/rocker arm shafts. The following is purely precise information (without additional description):

Core Parameters and Information

Item Details
Part Model: CAT 9R-1606 (9R1606) Single-row Cylindrical Roller Bearing with Cage

Part Type: Cylindrical roller bearing without inner ring, used for radial support of rocker arm shafts, bearing pure radial loads

Material: High carbon chromium bearing steel GCr15, roller hardness HRC62-65, cage is phenolic resin, raceway surface grinding Ra≤0.4μm

Key Dimensions: Inner diameter 25.00mm (H7 tolerance), outer diameter 35.00mm (r6 tolerance), width 18.00mm, roller diameter 3.00mm, number of rollers 10

Structural Features Features an integral cage, no inner ring, outer ring with lubrication groove, radial clearance C3 (0.012-0.020mm)

Matching: Clearance fit with shaft (0.012-0.020mm), interference fit with mounting hole (0.008-0.015mm), operating temperature -30℃ to +120℃

Lubrication Requirements: Grease lubrication (CAT DEO-ULS No. 2 lithium-based grease), lubrication cycle 200 working hours

Compatible Engines and Assemblies:

Engines: CAT C7.1, C9.3, C13 (valve rocker arm shaft assembly)

Compatible Assemblies: Rocker arm shaft support, valve cover rocker arm shaft support

Matching Parts: 9R-1606 bearing, 8T-4125 elastic retaining ring, M6×1.0 bolts (2 pieces)

Installation and Fitting Points: Clean the mounting hole and bearing surface, free of burrs and oil stains. The mounting hole roughness should be… Ra≤1.6μm.

Cold press installation, pressure≤15kN, outer ring end face fits snugly against the mounting base, coaxiality≤0.03mm.

Interference fit with mounting hole 0.008-0.015mm, clearance with shaft 0.012-0.020mm, rear end face runout ≤0.05mm.

Add grease after installation, ensuring the oil groove is full of grease. Installation torque for M6 bolts is 8-10N・m.