There are three current undercarriage options for many of the Bobcat compact track loaders. If you have a suspension undercarriage the track rollers will have mounting blocks on the side for the leaf springs. If you have the rigid solid mount rollers or the torsion system there won't be a mounting arm on the side, but there are several roller differences among the different series. Each series can have different sprockets and idlers as well. If you do not know which version you have please see this explanation: Bobcat Undercarriage Types.
If you can tell us which type undercarriage you have, as well as your serial number then we can guide you to the correct parts you need. Serial numbers are duplicated in each undercarriage type so you can not base your parts selection on serial number alone.
Upgrade your Bobcat T630 series rubber tracks to the premium aftermarket rubber tracks from Rubbertrax and increase lifespan and performance from your undercarriage. We now supply the complete line of T630 series undercarriage parts including the Shallow 6 Bolt Drive Sprocket (6726052), Deep 6 Bolt Sprocket (6736306), Deep 12 Bolt Sprocket (7166679), the Front Idler (6732902), the Rear Idler (6732903), and the Bottom Track Rollers (Bolt Style 6689371) . We are also stocking optional rubber track tread patterns and track width options.
The images below can help guide you to the correct part number you need if you are not familiar with the terms used to reference the undercarriage parts.