Core supporting positions of vertical hydraulic presses, lifting platforms, pipeline valve spindles, vertical mixing tanks, machine tool tailstocks and vertical woodworking machinery mainly sustain vertical axial thrust with minimal radial loads. Most of these mechanisms operate at low speed with frequent lifting and start-stop cycles, requiring bearings to achieve precise axial positioning and control vertical shaft play. Ordinary radial bearings cannot withstand large pure axial loads and tend to fail prematurely. Conventional thrust ball bearings often suffer insufficient sorting precision of steel balls, uneven raceway hardness after heat treatment and low cage rigidity. Ball seizure, raceway pitting and abnormal noise easily occur under low-speed heavy loads. Single-direction thrust ball bearings only resist thrust from one direction, while double-direction types accommodate axial forces in both directions. Flexible selection according to load directions makes them standard axial support components for various vertical machinery.

Focusing on R&D of low-speed axial load bearings, Japan NMT launches 51000 series single-direction thrust ball bearings and 52000 series double-direction thrust ball bearings to solve industry pain points of traditional models including insufficient raceway wear resistance, deformable cages, severe abrasion under low-speed boundary lubrication and poor dimensional consistency. Adopting classic thrust structure with flat annular raceways and steel ball assemblies, combined with five core upgrades including high-purity bearing steel, high-precision graded steel balls, high-strength stamped cages, surface strengthened heat treatment for raceways and tight tolerance control. Single-direction models serve unidirectional axial positioning; double-direction types adapt to alternating bidirectional axial loads. Widely matched with presses, lifting equipment, valves and vertical mixers, the bearings balance force distribution on steel balls, reduce friction and abrasion at low speed and maintain stable axial positioning accuracy.

Core Product Advantages

1. Dedicated design for pure axial loads with outstanding axial load capacity: Optimized to bear axial thrust only, not suitable for radial loads. It can sustain large continuous axial forces within identical overall dimensions, meeting axial load demands generated by self-weight and hydraulic pushing of vertical equipment.

2. Single & double direction options adapting to diverse load directions: 51000 single-direction series withstand unidirectional axial loads; 52000 double-direction series equipped with middle shaft washer support axial forces in both positive and negative directions, ideal for lifting and reciprocating mechanisms with alternating load directions.

3. High axial positioning accuracy to control shaft play: Excellent fitting precision between shaft washer and housing washer strictly limits axial displacement of shafts after assembly, lowering vibration of lifting mechanisms and valve spindles and improving equipment operation stability.

4. Optimized matching between raceways and balls for enhanced low-speed wear resistance: Precisely ground raceways and strictly sorted steel balls improve contact conditions under low-speed boundary lubrication, mitigating impact abrasion caused by frequent start-stop cycles and delaying fatigue pitting on raceways.

5. Compact split structure for easy assembly and superior interchangeability: Separated construction; the shaft washer rotates together with the shaft while the housing washer is fixed to housing. Metric standard dimensions enable direct interchangeability with bearings of equivalent sizes from other brands, convenient for maintenance and replacement.

Application Scenarios

Axial supports for vertical hydraulic presses and stamping equipment; thrust supports for lead screws of lifting platforms and small hydraulic elevators; valve stem bearings for water supply, drainage and industrial pipeline valves; axial positioning for vertical mixing tanks and vertical mixers; tailstock support for ordinary lathes and grinding machines; axial limiting positions of vertical woodworking machines and small screw conveying equipment.

Precision Quality Assurance

NMT thrust ball bearings are manufactured strictly in accordance with Japanese thrust bearing standards. Raw materials pass ultrasonic flaw detection. Tests including continuous axial load durability test, impact abrasion test under frequent start-stop, low-speed reciprocating operation simulation and dimensional consistency inspection are carried out. Featuring stable axial load capacity, smooth ball rotation and reliable positioning, the bearings fully adapt to low-speed heavy axial load conditions of vertical machinery, lifting devices and valve mechanisms.

Product Range

51000 series single-direction thrust ball bearings; 52000 series double-direction thrust ball bearings; stamped steel cages; open construction; complete standard tolerance sizes; available in matched sets, customized non-standard sizes supported for partial specifications.

Brand Strength

Japan NMT focuses on R&D and manufacturing of thrust ball bearings, specializing in core technologies including precision machining of flat raceways, balanced load distribution of steel balls, cage rigidity optimization and wear-resistant heat treatment for low-speed conditions. Supported by precision grinding production lines and axial load simulation test benches, NMT solves common industry pain points such as raceway pitting, cage deformation and low-speed abnormal noise of thrust ball bearings used in lifting equipment and valves, supplying highly stable axial support thrust ball bearing solutions for global general machinery and hydraulic equipment manufacturers.