In precision manufacturing and heavy equipment, the true value of technology is ultimately reflected in the long-term stable performance of the product. A bearing operating in equipment for months or even years – its precision retention capability, wear resistance, and operational stability are the real measures of quality.

 

NMT Precision Four-Point Contact Ball Bearings embody years of technical accumulation and manufacturing experience. From the geometric optimisation of the Gothic arch raceway, to the precise control of material heat treatment processes, from superfinishing surface treatment, to strict final inspection – every step reflects NMT's commitment to quality.

 

The Gothic arch raceway structure is the technical foundation of NMT bearings. This optimised raceway geometry enables a single bearing to handle radial loads, bidirectional axial loads, and tilting moments, providing greater flexibility for equipment design. High-purity bearing steel combined with systematic heat treatment gives raceways a uniform hardened layer while maintaining core toughness, balancing wear resistance and impact resistance. Superfinished raceway surfaces coordinate with precision-graded balls for smooth operation and low friction loss.

 

NMT bearings adopt internationally standardised external dimensions for direct interchangeability with mainstream brand products. Precision grades cover P0 to P4, with flexible clearance options and various seal types. Thin-section and heavy-duty series cover bore diameters from 16mm to over 650mm, suitable for industrial robots, cranes, radar, medical equipment, CNC machine tools, and various other industries.

 

Technology is the foundation; quality is the commitment. NMT responds to every trust with solid products.

 

Core Product Advantages

Optimised Gothic arch raceway design enables a single bearing to handle three-direction combined loads, delivering simple and efficient structure;

 

High-purity bearing steel with precision heat treatment provides uniform raceway hardness and a strong, tough core for wear resistance and impact resistance;

 

Superfinished raceways paired with precision-graded balls deliver low friction, low temperature rise, and smooth operation;

 

Sealed models with multi-layer protection adapt to dusty, humid, and corrosive environments;

 

International standard external dimensions for direct interchangeability with mainstream brands, convenient for both integration and replacement;

 

Precision grades P0 to P4 and multiple clearance options for flexible configuration;

 

Thin-section and heavy-duty series covering bore diameters from 16mm to over 650mm for extensive coverage;

 

Every bearing set undergoes dynamic testing before shipment, with verifiable quality records.

 

Typical Applications

Industrial robot bases and joints – precision maintenance under high-frequency motion; Crane slewing mechanisms – stable rotation under heavy eccentric loads; Radar antenna turntables – reliable all-weather outdoor operation; CT scanners, linear accelerators and other medical equipment – low-noise, low-vibration precision rotation; CNC machine turntables and indexing plates – high-rigidity precision indexing; Port machinery and marine equipment – long-term service in salt-spray environments; Construction machinery and aerospace ground equipment – reliable load-bearing under extreme conditions.

 

Quality Assurance

Quality assurance runs through the entire NMT manufacturing process. Bearing alloy steel undergoes spectral analysis, inclusion and grain size testing upon incoming inspection. Controlled-temperature forging refines grain structure. Fully automatic heat treatment curve management ensures consistent hardened layer depth across batches. Raceways undergo three stages – rough grinding, finish grinding, and ultra-precision finishing – for stable surface quality. Steel balls are multi-stage ground and precision-graded for good dimensional consistency. Cages are precision-machined with accurate pocket dimensions. Assembly takes place in clean environments. Finished products pass torque, vibration, clearance, and run-in tests, with complete data archived. Rust-preventive packaging ensures flawless delivery.

 

Product Range

Thin-section series – compact and lightweight, suitable for space-constrained applications such as robots and medical equipment; Heavy-duty series – reinforced cross-section, suitable for high-load applications such as cranes, port machinery, and construction equipment; Bore diameter from 16mm to over 650mm; Speed range 1500 to 17000 r/min; Open, single-seal, double-seal; Precision grades P0, P6, P5, P4; Clearance grades C2, CN, C3, and custom options.

 

Brand Strength

NMT has been dedicated to the field of precision four-point contact ball bearings for over a decade. Products serve the industrial robot, construction machinery, radar communications, medical equipment, CNC machinery, and other industries. With solid technical accumulation and consistent product quality, NMT has earned recognition from customers both domestically and internationally.

 

NMT adheres to a pragmatic and steady business philosophy, continuously improving products and processes. Bearings are the foundation of equipment operation. NMT stands on a foundation of technology and quality, providing reliable bearing products for industrial equipment worldwide.