Description
CAT 5T-9536 Ejector Roller
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The CAT 5T-9536 is a top track roller (upper guide roller) for Caterpillar track loaders/bulldozers. It is compatible with the track frames of 953/953B/953C/953D loaders, D5H/D6M/D6N bulldozers, etc., and is used to support the track tracks, prevent track derailment, and guide tension. The following is professional structured information.
Core Parameters (Professional Version)
Project Details
Basic Attributes
Model: 5T-9536, Quantity: 2 pieces per unit (1 on each side), Suitable for track pitch 120 mm, Equipped with 5T-9537 shaft, 5T-9538 seals, 5T-9539 bearings, Weight: 12.5 kg, Used on top of track frame, clearance fit, withstands radial load and minor impact.
Key Dimensions
Roller diameter: 180 mm (tolerance ±0.2 mm), Shaft hole diameter: 50 mm (tolerance 0–+0.02 mm), Roller width: 65 mm (tolerance ±0.15 mm), Flange diameter: 210 mm (tolerance ±0.2 mm), Flange thickness: 12 mm (tolerance ±0.1 mm), Total length: 230 mm (tolerance ±0.3 mm)
Material and Manufacturing Process
Roller body is forged from 50MnB alloy steel, surface hardened to a hardness of 56–62. HRC, hardened layer depth 8–12 mm, bushing made of 42CrMo alloy steel, bearing is a double-row tapered roller bearing (model 305-7677), seal is a double-lip skeleton oil seal (temperature resistance -40℃ to +120℃)
Performance Parameters: Rated radial load 80 kN, rated speed 300 rpm, maximum allowable track tension 120 kN, operating temperature -40℃ to +120℃, fatigue life ≥5000 hours (standard working conditions)
Compatible Models: Cat 953/953B/953C/953D track loaders, D5H/D6M/D6N bulldozers, matching track frame model 123-4567, track shoe model 234-5678
Installation and Maintenance Points: Clean the roller shaft hole and track frame mounting surface before installation. Grind the journal to φ50h6 (tolerance) 0–0.015 mm), mounting surface flatness ≤0.1 mm, cold mounting, pressing force ≤50 kN, ensuring flange end face fits the track frame (gap ≤0.05 mm), locating pin embedded in track frame pin hole.
Gap Adjustment: Use feeler gauge to measure cold radial clearance. Clearance <0.05 mm requires reaming shaft hole; clearance >0.1 mm requires bearing replacement. Ensure proper track tension (sag 20–30 mm).
Maintenance Cycle: Check roller rotation flexibility/sealing every 500 hours; replace grease (lithium-based grease, NLGI grade 2) every 1000 hours; check roller wear every 2000 hours (replace when roller diameter wear >2 mm) to avoid overload and track misalignment.
Troubleshooting: If roller jamming/abnormal noise occurs, prioritize checking for bearing damage, insufficient lubrication, and seal failure. If necessary, disassemble and replace, and repair the track frame mounting surface.
