Overview
The Crown Automotive J8127630 is a front inner hub bearing cup for the Dana 30 axle on the 1976–1986 Jeep CJ5, CJ7 and Scrambler.
A bearing cup is the outer race pressed into the hub, the hardened surface that a tapered roller bearing rides against. Replacing a worn bearing normally means replacing its cup as well.
The part is the front inner bearing cup for the Dana 30 Standard axle.
The cup is the surface the bearing rollers run on, and a pitted or discolored cup should be replaced with its cone. This cup fits the front inner position on the Dana 30 Standard. Many owners replace the cup and cone together so the surfaces wear in as a pair. Compare the cup with the old one before ordering to confirm the size matches.
Key features
- Front hub bearing cup
- Front inner position
- For the Dana 30 Standard axle
- Direct fit
Cup and cone replacement
The bearing cup and cone work as a matched pair. The cone is the inner race that rolls on the cup, and both surfaces wear together under load. When one is pitted, discolored or grooved, the other is usually marked as well, so replacing only one part can leave a rough surface that wears a new bearing quickly. Inspect both surfaces before buying, and plan to replace the cone with the cup when wear shows.
Seating a cup needs a clean bore and a square press or driver, since an angled cup can crack or sit unevenly. Clean the hub bore of rust and old grease before pressing in the new cup, and make sure it bottoms fully against its shoulder. Repack the bearings with fresh grease and install new seals when the hub is reassembled.
- Check the spindle for wear or scoring
- Use the matching bearing set for the front inner position
- Set bearing preload to the setting for your axle
- Inspect the rotor and hub for cracks at the same time
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J8127630 |
| UPC | 848399069426 |
| Part type | Front hub bearing cup |
| Axle | Dana 30 Standard |
| Position | Front inner |
Vehicle fitment
The J8127630 fits the following vehicles:
- 1976–1983 Jeep CJ5 (Base, Golden Eagle, Laredo, Limited, Renegade)
- 1976–1986 Jeep CJ7 (Base, Golden Eagle, Golden Hawk, Laredo, Limited, Renegade)
- 1981–1985 Jeep Scrambler (Base, Laredo, Renegade, SL, SR)
Only CJ5, CJ7 and Scrambler years are covered. Wrangler and Cherokee models are not on the list. Confirm your vehicle’s year, model and trim before ordering.
What’s included
One bearing cup, part number J8127630.
Not included: the matching bearing cone, seals and hub hardware.
