Case 480CK, 480B, 580CK, 580B Transaxle Parts

Rear axle and differential components for Case 480CK, 480B, 580CK, and 580B backhoe loaders, covering differential gears, ring and pinion sets, bull gears, differential shafts, bearing and seal kits, brake carrier plates, and related hardware.

Fits Models At A Glance

• 430 / 530 Series: 430, 430CK, 530, 530CK
• 480 Series: 480, 480B, 480C, 480CK, 480D, 480E, 480F
• 580 / 580B Series: 580, 580B, 580CK, 580C, 580D, 580SD, 580 Super D
• 580E / 580K Series: 580E, 580 Super E, 580K, 580 Super K
• 580L / 580M Series: 580L, 580 Super L, 580M, 580 Super M
• 580N / 590 Series: 580N, 580 Super N, 590 Turbo, 590 Super L, 590 Super M, 590 Super N

Key Notes

• Application: Rear axle and differential components for Case backhoe loader rear axle systems
• Coverage: Includes differential side gears for standard and diff lock machines, ring gear and pinion sets, spider gears, bull gears, differential shafts, rear axle bearing and seal kits, brake bearing carrier plates, reseal kits, oil seals, wheel lug bolts, and wheel spacer kits
• Function: Maintains rear axle differential, bull gear, and wheel end function on Case 480CK, 480B, 580CK, and 580B backhoe loader platforms
• Fitment Note: Differential side gear fitment varies between standard and differential lock equipped machines — verify configuration when ordering

Why Choose Broken Tractor

• ✅ Full rear axle and differential coverage for 480CK and 580CK series
• ✅ Standard and diff lock differential gear options available

Frequently Asked Questions

Which differential side gear fits a Case 580B with differential lock?

Broken Tractor offers a Case Right Hand Side Gear with Differential Lock (SKU A144339) that fits the 580B, 580, 480B, 480, 430 and 530. We also carry a standard Rear Differential Side Gear (SKU A144338) for the 580B, 580CK, 480B, 480CK, 430 and 530. Side gear fitment depends on whether your machine has differential lock, so confirm your setup before ordering.

What rear axle bearing and seal kit fits a Case 580CK?

The Early Rear Axle Bearing and Seal Kit (SKU CS-580B-RA-Kit) is built for the Case 580CK and 480CK, and it is marked for the 580B and 480B as well. Fitment on the 580B and 480B can vary by serial number, and later machines such as the 580C, 480C and 580K take the Rear Axle Bearing and Seal Kit (SKU CS-580-RA-Kit) instead. To confirm the right kit for your serial number, call (800) 909-7060.

Does the ring gear and pinion set fit a Case 480B backhoe?

Yes, the Rear Differential Ring Gear and Pinion Set (SKU A50997) fits the Case 480B, 480CK, 530, 580CK and 580B. The Rear Axle Bull Gear (SKU A168925) covers the same five backhoe models. We also carry the matching spider gear (SKU A38933) and spider gear pin (SKU A39024) for these differentials, so check each part's fitment against your model.

Are the brake bearing carrier plates for a Case 580CK sold by side?

Yes, Broken Tractor lists the brake bearing carrier plates as separate left and right parts. The Left Hand Brake Bearing Carrier Plate is SKU A140280, and the Right Side Brake Bearing Carrier is SKU A140279. Both fit the Case 580CK, 580B, 480CK, 480B, 430CK and 530CK. For the bearings and seals at the backing plate, we also offer the Case Brake Backing Plate Bearing and Seal Kit (SKU CS-580-BPK).

What is the difference between the aluminum and steel rear rim spacer kits for a Case 580B?

Both are 8-bolt Case Backhoe Rear Rim Chain Spacer Kits, and the main difference is the material: one is high-strength aluminum (SKU CS-WSPKIT-2) and the other is steel (SKU CS-WSPKIT-2-Steel). Both versions fit the Case 580B, 580CK, 480B, 480CK, 530CK and many later 480 and 580 models up to the 580K. The 580K is marked with an asterisk, so match the part number or check your serial number if you have a 580K.