Bearing, Thrust Spindle (W/ ADJ FRONT). PART NO: A-72089037. Dim A (1)2.380" OD Dim B (2)1.500" ID. . MODELS: Allis-Chalmers TRACTOR: 5040 (W/ ADJ FRONT) Allis-Chalmers TRACTOR: 5045 (W/ ADJ FRONT) Allis-Chalmers TRACTOR: 5050 (W/ ADJ FRONT) Allis-Chalmers TRACTOR: 5040 (W/ ADJ FRONT) Allis-Chalmers TRACTOR: 5045 (W/ ADJ FRONT) Allis-Chalmers TRACTOR: 5050 (W/ ADJ FRONT).