Bottom Rollers for Tracked Equipment
Bobcat 328G Bottom Rollers
Replacement bottom rollers for Bobcat 328G tracked equipments. Support and distribute machine weight across the track. Wholesale pricing with fast shipping from our Houston warehouse.
Researched Part Numbers for Bobcat 328G
Research-Based Fitment Data: The following part numbers have been researched for compatibility with Bobcat 328G tracked equipments. Part numbers and fitment vary by serial number range.Please call 346-438-6252 with your machine serial number to confirm exact fitment before ordering.
Research-Based Fitment — Call to Confirm
6814882
bottom roller
Bobcat 331/335/430 Mini Excavator Bottom Roller
Primary Part Number
6814882
Alternate / Interchange Numbers
Supersession / Interchange Notes
Shaft threading 3/4 UNC; max torque 425 Nm / 310 ft-lb noted by RubberTrax.
Compatible Machines
Bobcat 225, 231, 325, 328, 331, 334, 335, 430, E26, E32, E37, E42, E50. Also upper/carrier roller for Bobcat 337, 442, ZX75.
Mount Type / Chassis Notes
Bottom center roller; older nut/stud vs newer bolt style can matter. 7013575 is newer bolt style.
Serial Number Specific
Steel track machines may use alternate roller 6814886.
Research-based fitment data. Please call with your machine serial number to confirm compatibility before ordering. Part numbers and fitment may vary by serial range.
346-438-6252 • Houston, TX
Research-Based Fitment — Call to Confirm
7013575
bottom roller
Bobcat E32 / E35 / 325 Bottom Roller 7013575
Primary Part Number
7013575
Alternate / Interchange Numbers
Supersession / Interchange Notes
Per Bobcat OEM catalog: 7013575 supersedes previous part number 6693489 (direct replacement).
Compatible Machines
Bobcat 225, 325, 328, 329, 331, 334, 335, 425, 428, 430, E25, E26, E32, E32i, E34, E35, E35i, E35Z, E37, E42 mini excavators (per Bobcat OEM catalog).
Mount Type / Chassis Notes
Bolt-mounted bottom roller, forged steel. Approx 7-3/8 in length, 8-1/2 in body diameter. Installs with bolts to the track frame.
Serial Number Specific
Bobcat OEM catalog states parts can vary by serial number - have customer verify in the Bobcat Online Parts Catalog or send serial + photo before ordering.
Research-based fitment data. Please call with your machine serial number to confirm compatibility before ordering. Part numbers and fitment may vary by serial range.
346-438-6252 • Houston, TX
Research-Based Fitment — Call to Confirm
7013576
bottom roller
Bobcat Excavator Bottom Roller 7013576 (Steel Track)
Primary Part Number
7013576
Alternate / Interchange Numbers
Supersession / Interchange Notes
Bobcat 7013576 supersedes the previous part number 6693497.
Compatible Machines
Bobcat 225, 325, 328, 329, 331, 334, 335, 425, 428, 430, E26, E32, E32i, E34, E35, E35Z, E35i, E37, E42 mini excavators - STEEL-track undercarriage.
Mount Type / Chassis Notes
Forged-steel bottom roller for the STEEL-track undercarriage. IMPORTANT: the rubber-track version of this roller is 7013575 (already in catalog) - confirm steel vs rubber track before ordering. Supersedes 6693497.
Serial Number Specific
Parts can vary by serial number - verify steel vs rubber track and serial in the Bobcat parts catalog before ordering.
Research-based fitment data. Please call with your machine serial number to confirm compatibility before ordering. Part numbers and fitment may vary by serial range.
346-438-6252 • Houston, TX
About Bottom Rollers for Bobcat 328G
Bottom rollers (also called track rollers or lower rollers) are mounted along the track frame and roll against the inside of the rubber track. They carry the entire weight of the machine and distribute it evenly across the track, reducing point loading and premature track wear.
Each roller contains sealed bearings and lubricant that allow smooth rotation under heavy loads. The outer shell is typically hardened steel designed to resist wear from abrasive materials like sand, gravel, and debris.
Quality bottom rollers feature double-sealed or triple-sealed bearings to prevent contamination and extend service life. The seal design is critical in harsh environments where mud, water, and fine particles can compromise bearing function.
How Bottom Rollers Work
Bottom rollers ride along the inside of the track, supporting the machine's weight while allowing the track to move freely. They maintain track alignment and prevent the track from contacting the track frame. As the track rotates, the rollers spin on their bearings, distributing load and reducing friction.
Signs You May Need Replacement Bottom Rollers
Regular inspection of your bottom rollers can prevent costly track damage and downtime. Watch for these warning signs that indicate replacement may be needed:
•Flat Spots or Uneven Wear
Visible flat spots on the roller surface indicate bearing failure or seized rotation. This causes the roller to slide rather than roll, damaging both the roller and the track inner surface.
•Wobbling or Excessive Play
Side-to-side movement or bearing play causes track misalignment and uneven wear. This often indicates worn bearings or internal damage that will worsen rapidly.
•Leaking Seals or Oil Weeping
Oil around the roller face or shaft indicates seal failure. Without proper lubrication, bearings will fail quickly, often within hours of continued operation.
•Grinding or Unusual Noise
Metallic grinding, squealing, or rumbling during operation suggests bearing damage or debris contamination. Stop operation and inspect immediately to prevent further damage.
•Track Derailment or Walking
Worn rollers lose their ability to guide the track properly, leading to the track walking off to one side or complete derailment. This can cause significant damage to the track and undercarriage.
•Premature Track Wear
If your tracks are wearing faster than expected, damaged bottom rollers may be causing uneven contact or increased friction. Replacing worn rollers can significantly extend track life.
Fitment Verification
Bottom roller specifications can vary by serial number, production year, and undercarriage configuration. Some machines have solid-mount rollers while others use suspension-mount designs.
Always verify your machine's serial number before ordering. Our team can cross-reference your serial to confirm the correct roller style, mounting pattern, and quantity.
If you are unsure about roller specifications, contact us with your machine serial number and we will confirm exact fitment at no charge.
Free Fitment Verification
Not sure which bottom roller fits your Bobcat 328G? Contact us with your serial number and we will verify the correct part at no charge.
Related Bobcat 328G Parts
Complete your undercarriage maintenance with these related components for your Bobcat 328G.
Compatible Rubber Track Sizes for Bobcat 328G
Find the correct rubber track size for your Bobcat 328G. Always verify with your serial number for accurate fitment.
Get a Quote for Bobcat 328G Bottom Rollers
Contact us with your machine details for competitive wholesale pricing. Include your serial number for accurate fitment verification.
Get wholesale pricing on rubber tracks and undercarriage parts. We respond within 2 business hours.
Frequently Asked Questions About Bobcat 328G Bottom Rollers
Why Choose Rubber Track Wholesale?
- Wholesale Pricing
Competitive pricing direct from our Houston warehouse
- Fast Nationwide Shipping
Same-day shipping on in-stock items
- Expert Support
Knowledgeable staff to help with fitment and selection
- Quality Assurance
Premium components meeting OEM specifications