Bobcat Triple Flange Bottom Roller (6689371)

PRODUCT DESCRIPTION

This aftermarket replacement bottom center track roller is designed for specific Bobcat compact track loaders (CTLs). Detailed information is as follows:

I. Core Compatible Models
Suitable for the following Bobcat models (note chassis type restrictions):
T140®, T180®, T190®, T200®, T250®, T300®, T320®, 864®
T630 (serial numbers AJDT11001 – AJDT12076, solid mount undercarriage only)
T550 (serial numbers A7UJ11001 & above, AJZV11001 – AJZV13999)
T650 (solid mount undercarriage only; not compatible with suspension mount systems)
T750 (solid mount undercarriage only; not compatible with suspension mount systems; serial numbers ANKA11001 & above, ATF611001 & above)
T770 (machine-specific serial number and solid mount suspension type must be verified)

II. Special Compatibility Notes for T590 Series
This roller is compatible with the T590 series (solid mount undercarriage only; not compatible with suspension mount systems). Confirm the following serial number ranges before ordering:
A3NR11001 – A3NR15598 (solid mount)
A3NS11001 – A3NS11999 (solid mount)
ALJU11001 – ALJU16824 (solid mount)
B37811001 – B37811103

III. Part Numbers and Version Information
Corresponding Bobcat dealer part numbers: 6689371, 6686632
Version differences:
This model: New bolt-on style, requires bolts (model 31C1224, sold separately)
Older model: Threaded post and nut style, part number 6732901, compatible with older Bobcat models, interchangeable with this model
Additional note: We also stock the older threaded post-and-nut style roller, available for purchase on our website

IV. Installation Quantity and Maintenance Recommendations
Quantity verification:
Older T190 models: 3 per side
Newer T190 models: 4 per side
Larger models: 5 per side
Always confirm the number of bottom rollers per side on your equipment before ordering
Maintenance advice:
It is recommended to replace the rear idler and the bottom rollers at the rear of the machine simultaneously. When Bobcat track loaders are unloaded, weight is concentrated on the rear idler and rear bottom rollers, causing faster wear on the rear components. Replacing them together ensures even wear and extends overall service life.

V. Product Quality Features
Manufactured to strict original specifications with a triple flange design for precise fit
Equipped with high-quality double lip seals: Effectively blocks dust and debris, retains lubrication, and extends service life
Includes installation hardware for ready-to-install use upon delivery.

VI. Related Undercarriage Parts
We also supply a full range of undercarriage components for Bobcat compact track loaders, including:
T300 Series CTL deep sprockets
Bolt-style bottom rollers
Front idlers (6732902, 6693237)
Solid mount rear idlers (6732903)