HMK thrust ball bearing is a dedicated axial bearing structure composed of shaft washer, housing washer and steel ball cage assembly, designed exclusively to undertake axial load, cannot carry radial load. It is divided into single direction thrust ball bearing (51000 series) for unidirectional axial force and double direction thrust ball bearing (52000 series) for bidirectional axial load; optional flat seat washer and spherical seat washer to compensate installation tilt error of mounting surface. All HMK standard 51000、52000 series thrust ball bearings are spot stocked for global bulk procurement.

Core Advantages

1. Focused Axial Load Capacity

Specially structured to withstand large unidirectional/bidirectional axial load, excellent load-carrying capacity under low-speed vertical rotation working conditions.

2. Two Main Structural Types

Single direction(51000 series): resist one-way axial force; Double direction(52000 series): withstand two-way axial load for reciprocating axial displacement shafts.

3. Optional Spherical Seat Design

Spherical housing washer matches tilted mounting plane, automatically offset installation deflection error, avoid bearing stuck and premature wear.

4. Premium GCr15 Raw Material

High hardness, anti-fatigue, stable dimensional precision after overall quenching, long service life under continuous heavy axial load.

5. Full ISO Standard Sizes

Comply with international ISO dimensional standard, fully interchangeable with mainstream brands, full range small to large size ready in warehouse, support OEM custom machining.

Main Applications

• Lifting Machinery: Crane hooks, manual hydraulic jacks, lifting screw rod assemblies

• Pump & Reducer: Vertical water pump shaft, small gear reducer, vertical speed reducer

• Automotive Parts: Clutch assembly, steering shaft, vehicle screw lifting structure

• General Machinery: Lathe spindle, textile vertical equipment, engineering small transmission components

• Valve & Instrument: Large valve rotary core, heavy-duty fixture rotating part

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