Technical Dimensions
| Part # | 340-8957 |
|---|---|
| Tooth Count | |
| Bolt Hole Count | |
| Auxiliary Holes | |
| Outside Diameter | |
| Inside Diameter | |
| Dish Depth | |
| Flange Diameter | |
| Drive Configuration | |
| Mount Configuration | |
| Stamped Part # | |
| Pitch | |
| Weight | 20.68 lbs |
CAT 304CR Bottom Roller | Part #340-8957
Regular Price
$135.00
x 1
PRODUCT SPECIFICATIONS
Construction & Features
| Durability | Heavy duty only |
|---|---|
| Fitment | OEM-reference match |
| Construction | Drop forged steel |
| Finish | Heat-treated hardening |
Fitment Table
| CAT | 304CR |
|---|
Frequently Asked Questions
Fitment, availability, fulfillment, and support for this product
What bottom roller / track roller fits the Cat 304CR?
This bottom roller / track roller is listed for the Cat 304CR and matches OEM Part #340-8957. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.
What sprocket fits the Cat 304CR?
Matching drive sprocket options for the Cat 304CR include CAT 304CR Sprocket | Part #158-4795. When installing new rubber tracks, inspect sprockets for hooked, sharp, or uneven teeth because worn sprockets can shorten track life and damage the drive lugs.
What front idler fits the Cat 304CR?
Matching front idler options for the Cat 304CR include CAT 304CR Front Idler | Part #241-5973. Front idlers guide the track and help maintain proper tension, so inspect the flange, bearing condition, and wear surface before installing new tracks.
What top roller fits the Cat 304CR?
Matching top roller options for the Cat 304CR include CAT 304CR Carrier Roller | Part #277-8576. Top rollers support the upper track path and should be checked for bearing play, flat spots, and uneven wear during undercarriage service.
What rubber tracks pair with this bottom rollers?
Matching rubber track options connected to this Cat 304CR undercarriage setup include CAT 304CR Rubber Tracks | 400x72.5Wx72 (Part #400X72.5WX72). If you are replacing this part, inspect the full undercarriage so the new component and rubber tracks wear evenly together.
Should I inspect the full undercarriage before replacing this Cat 304CR part?
Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Cat 304CR, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.
How do I confirm this product fits the Cat 304CR?
Confirm fitment by checking your machine make, model, serial number, and existing track size or OEM part number. For rubber tracks, verify width, pitch, and link count. For undercarriage parts, compare the part number, bolt pattern, tooth count, and machine position. You can also use the TrackTECH Track Finder or call (850) 816-7898 before ordering.
How fast does TrackTECH ship Cat 304CR parts?
TrackTECH ships rubber tracks and undercarriage parts quickly across the Lower 48. Heavy items typically ship by freight, while smaller undercarriage parts may ship by parcel depending on warehouse availability. Review TrackTECH shipping information or contact us before ordering if you need priority freight options.
Find More Undercarriage Parts
Browse machine-matched sprockets, idlers, rollers, and related parts