1B3934 Bearing-Cup Fits Caterpillar Models
1B3934 Bearing-Cup Fits Caterpillar Models
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One New Aftermarket Replacement Bearing Cup for Caterpillar (Cat) Construction Equipment
This aftermarket replacement tapered roller bearing cup (outer ring) replaces Caterpillar part number 1B3934 (also formatted as 1B-3934). The bearing cup is the outer race component of a tapered roller bearing assembly, designed to handle combined radial and thrust loads in heavy-duty construction and earthmoving equipment. Compatible across a wide range of Caterpillar wheel loaders, wheel bulldozers, tracked bulldozers, and scrapers.
Specifications
- Type: Tapered Roller Bearing Cup (Outer Ring Only)
- Outside Diameter: 6.375 in (161.93 mm)
- Width: 1.500 in (38.1 mm)
Compatible Models
Caterpillar Tracked Bulldozers: 183B, 8D, 8S, D8H, D8K
Caterpillar Wheel Bulldozers: 814, 814B, 814F, 814K, 815B, 815F, 815F II, 816F, 816F II
Caterpillar Wheel Loaders: 966D, 966F, 966F II, 966G, 966G II, 966H, 966K, 966M, 966M XE, 970F, 972G, 972G II, 972H, 972K, 972M, 972M XE
Caterpillar Compactors/Landfill: 824K, 825K, 826K
Caterpillar Scrapers/Elevating Scrapers: 583H, 583K, 613, 613C, 613C II, 613G
Caterpillar Other: 814F II
Replaces Part Number(s):
1B3934, 1B-3934
New aftermarket replacement part - not remanufactured, not used.



