Many transmission shafts of belt conveyor rollers, industrial fans, woodworking cutting machinery, harvesters, shredders and light textile equipment suffer from span and frame deformation, prone to shaft deflection and assembly coaxial deviation during operation. Ordinary deep groove ball bearings have no self-aligning capability. Slight shaft tilt causes unilateral loading of steel balls, triggering continuous abnormal noise, rising temperature and pitting failure within a short period. Equipped with spherical outer ring and double-row steel balls, self-aligning ball bearings allow limited angular deflection between inner ring and outer ring, perfectly solving shaft misalignment problems. Most equipment operates outdoors or in dusty workshops under moderate radial loads, intermittent start-stop cycles and continuous medium-low speed rotation. Comprehensive requirements on bearing stability, maintenance convenience and procurement cost make self-aligning ball bearings the mainstream choice for such light-duty transmission devices.

Focusing on R&D of light-duty self-aligning support bearings, Japan NMT launches 1200 & 2200 series self-aligning ball bearings to solve industry pain points of traditional models including insufficient precision of spherical raceways, uneven load distribution between two rows, poor dustproof sealing, excessive temperature rise and large clearance dispersion. Adopting classic self-aligning structure with spherical outer ring and double-row steel balls, combined with five core upgrades including high-purity bearing steel, high-precision sorted steel balls, low-friction stamped cages, optimized spherical profile grinding and diversified clearance options, the series includes cylindrical bore and tapered bore variants. Tapered bore types can be mounted directly on smooth shafts with adapter sleeves, greatly simplifying assembly procedures. Widely used in conveying machinery, fans, woodworking and agricultural equipment, the bearings balance load distribution on double-row balls, reduce eccentric wear and extend service life.

Core Product Advantages

1. Built-in self-aligning function compensating shaft deflection and assembly misalignment: Spherical outer raceway allows angular deflection of inner ring and shaft relative to outer ring, effectively absorbing long shaft bending, frame deformation and assembly errors, avoiding unilateral eccentric loading of rolling elements and fundamentally reducing abnormal noise and premature failure.

2. Dual structural options of cylindrical bore & tapered bore for diverse mounting schemes: Cylindrical bore positioned by lock nuts; tapered bore can be installed on smooth shafts without shoulders via adapter sleeves, eliminating shaft shoulder machining and lowering shaft processing cost with excellent adaptability for equipment retrofitting.

3. Capable of radial loads and slight bidirectional axial loads with good versatility: Double-row steel ball layout mainly bears radial loads while tolerating minor bidirectional axial forces, ideal for transmission mechanisms such as conveyor rollers and fans with slight axial play.

4. Moderate rolling friction, outstanding cost performance under medium-low speed conditions: Point-contact rolling structure fits continuous medium-low speed operation. Compared with spherical roller bearings, it features smaller size and lower procurement cost, delivering high cost-effectiveness for moderately loaded applications.

5. Optional sealed versions resisting abrasive wear caused by dust ingress: Open type suitable for centralized circulating oil lubrication; double-sided rubber seals available for partial sizes to block dust and fiber debris, applicable to dusty environments such as woodworking, agriculture and conveying lines.

Application Scenarios

Roller supports for belt conveyors and roller conveying lines; main shaft bearings for industrial centrifugal fans and exhaust fans; transmission shafts of woodworking cutters, sanders and planers; agricultural machinery including wheat harvesters, straw shredders and irrigation equipment; light textile machinery such as spinning and weaving machines; rotary supporting positions of small mixing devices and light drying equipment.

Precision Quality Assurance

NMT self-aligning ball bearings are manufactured strictly in accordance with Japanese standards for general self-aligning bearings. Raw materials undergo flaw detection. Tests including tilt self-aligning durability test, continuous radial load abrasion test, dust condition operation simulation and high-low temperature dimensional stability test are carried out. Featuring smooth self-aligning movement, uniform load distribution and controllable temperature rise, the bearings fully adapt to long-term medium-low speed operation with frequent shaft misalignment for conveying equipment, fans, woodworking and agricultural machinery.

Product Range

1200,1300,2200,2300 series self-aligning ball bearings; cylindrical bore & tapered bore; open type & 2RS sealed type; stamped steel cages; standard C0 and C3 clearances; complete standard sizes, adapter sleeves available as matched sets, customized non-standard sizes supported.

Brand Strength

Japan NMT focuses on R&D and manufacturing of self-aligning ball bearings, specializing in core technologies including superfinishing of spherical raceways, load balance optimization for double-row balls, precision control of tapered bore fit and dustproof sealing optimization. Supported by precision grinding lines and working condition simulation laboratories, NMT solves common industry pain points such as eccentric wear, sealing failure and excessive temperature rise of self-aligning ball bearings used in conveying equipment, agricultural machinery and fans, supplying cost-effective self-aligning ball bearing solutions for global light industry, farming and general electromechanical manufacturers.