Komatsu PC27MR-3 Track Roller | Part #4340535

This bottom roller / track roller is listed for the Komatsu PC27MR-3 and matches OEM Part #4340535. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.

Matching drive sprocket options for the Komatsu PC27MR-3 include Komatsu PC27MR-3 Sprocket | Part #1032265. 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.

Matching top roller options for the Komatsu PC27MR-3 include Komatsu PC27MR-3 Carrier Roller | Part #9237948. Top rollers support the upper track path and should be checked for bearing play, flat spots, and uneven wear during undercarriage service.

Matching rubber track options connected to this Komatsu PC27MR-3 undercarriage setup include Komatsu PC27MR-3 Rubber Tracks | 300x52.5Nx80 (Part #300X52.5NX80). If you are replacing this part, inspect the full undercarriage so the new component and rubber tracks wear evenly together.

Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Komatsu PC27MR-3, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.

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.

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.

Check the size stamp molded into your existing track (format: Width x Pitch x Links, e.g., 450x86x60) or use our Track Finder tool to confirm the correct size for your your machine.

All your machine replacement rubber tracks include a 24-month warranty covering defects in materials and workmanship under normal operating conditions. This applies to contractor-grade use on properly maintained undercarriage systems.

Multiple tread patterns are available including C-Block (hard surfaces), Zig-Zag (all-terrain), and Multi-Bar (turf-friendly). Select based on your primary work environment.

Orders placed before 12 PM CT ship same day from our Georgia warehouse. Standard delivery is 1-3 business days nationwide. Tracks ship on pallets with free curbside delivery to commercial addresses.

Three ways to verify fitment: (1) Check the size stamp on your current track. (2) Use our Track Finder tool with your serial number. (3) Call (850) 816-7898 and we will confirm compatibility before you order.