Technical Dimensions
| Part # | RD809-21703 |
|---|---|
| Tooth Count | |
| Bolt Hole Count | |
| Auxiliary Holes | |
| Outside Diameter | |
| Inside Diameter | |
| Dish Depth | |
| Flange Diameter | |
| Drive Configuration | |
| Mount Configuration | |
| Stamped Part # | |
| Pitch | |
| Weight | 27.17 lbs |
Hitachi ZX70 Bottom Roller | Part #RD809-21703
Regular Price
$190.00
x 1
PRODUCT SPECIFICATIONS
Construction & Features
| Durability | Heavy duty only |
|---|---|
| Fitment | OEM-reference match |
| Construction | Drop forged steel |
| Finish | Heat-treated hardening |
Frequently Asked Questions
Fitment, availability, fulfillment, and support for this product
What bottom roller / track roller fits the Hitachi ZX70?
This bottom roller / track roller is listed for the Hitachi ZX70 and matches OEM Part #RD809-21703. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.
What top roller fits the Hitachi ZX70?
Matching top roller options for the Hitachi ZX70 include Hitachi ZX70 Carrier Roller | Part #LK327. Top rollers support the upper track path and should be checked for bearing play, flat spots, and uneven wear during undercarriage service.
Should I inspect the full undercarriage before replacing this Hitachi ZX70 part?
Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Hitachi ZX70, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.
How do I confirm this product fits the Hitachi ZX70?
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 Hitachi ZX70 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.
What machines is this bottom roller listed for?
Current compatible equipment listed in the TrackTECH catalog includes JCB JZ 70, Kubota KX080-3, Kubota KX080-4, Hitachi ZX70.
Where can I buy this bottom roller?
TrackTECH supplies new replacement bottom roller options with low direct pricing, free shipping and fast nationwide delivery. Current price and availability are shown on the product page.
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