NTN Bearings
NTN Corporation was established in 1918 in Japan and is one of the world's three largest bearing manufacturers, alongside SKF and Schaeffler. NTN produces a comprehensive range of bearings for industrial and automotive applications, with manufacturing and technical support operations across more than 30 countries. NTN bearings meet ISO 15 boundary dimensions and AS 2729 quality standards and are used across power generation, mining, construction, agriculture and precision machinery.
NTN Range at AIMS Industrial
AIMS Industrial stocks a focused selection of NTN deep groove ball bearings and tapered roller bearings. The deep groove ball bearing range covers rubber-sealed (2RS/LLUC3), shielded and open-type configurations in the 6000 and 6300 series, with C3 internal clearance options. NTN tapered roller bearings are available in metric configurations for gearbox and hub applications. If you need a NTN part number we don't stock, contact us — we can typically source it from local distribution within standard lead times.
NTN Quality & Heritage
NTN bearings are manufactured under rigorous quality management systems, with particular strength in bearing steels and heat treatment processes that deliver consistent hardness and dimensional accuracy. NTN has a long history supplying bearings to demanding sectors including automotive, aerospace and heavy industry — a heritage that flows through to their industrial bearing range.
Bearing Selection & Maintenance
Looking for an NTN equivalent? Our bearing cross-reference guide maps NTN part numbers against the standard industry codes shared with Koyo, NSK, SKF and NACHI — useful when sourcing an alternative brand for the same dimensions. For installation, alignment and failure diagnosis, see the bearing maintenance guide. Common type-specific guides: deep groove ball bearings, needle roller bearings and thrust bearings.
For a wider selection of bearings, explore our full bearings range, or call (02) 9773 0122 to discuss an NTN part number.
Available in Australia and New Zealand
This range ships across Australia from our Milperra (Sydney) warehouse — typically 1-3 business days for in-stock items. New Zealand customers: contact our team for freight quote — typically 5-7 business days via air freight to Auckland, Wellington and Christchurch. Trade and B2B accounts available on application both sides of the Tasman.
People Also Ask — NTN Bearings
Q: What is NTN?
NTN Corporation is a major Japanese bearing manufacturer (since 1918) — alongside NSK, Koyo, and NACHI as one of the four major Japanese bearing brands. NTN's range covers all standard bearing types: deep groove ball, angular contact, tapered roller, spherical roller, needle, cylindrical, and specialty bearings. Strong heritage in automotive bearings (CV joints, wheel hubs, transmissions) and industrial applications. NTN is OEM-spec for many Japanese-origin equipment and automotive applications.
Q: NTN vs other Japanese bearings (NSK, Koyo, NACHI)?
All four Japanese majors deliver equivalent quality, similar pricing, broadly equivalent ranges. NTN: strong in CV joints and automotive driveline bearings, broad industrial range. NSK: largest Japanese maker, broadest catalogue. Koyo (JTEKT): strong automotive heritage. NACHI: broad industrial + cutting tools. For replacement work, match the brand stamped on the original bearing where possible. For new specifications, all four interchange dimensionally — choice often comes down to availability and price.
Q: How do I read an NTN bearing number?
NTN follows the ISO bearing standard: prefix indicates type (6 = deep groove ball, 32 = tapered roller, NJ = cylindrical roller, NA = needle, etc.), bore code (e.g. '04' = 20mm, '05' = 25mm), suffixes for cage, seal/shield, clearance. Example: 6004LLU = deep groove ball, 20mm bore, double-sided rubber seals (LLU = sealed both sides). NTN-specific suffixes listed in their catalogue. See [Bearing Cross-Reference Guide](/blogs/product-guides/bearing-cross-reference-guide).
Q: What's NTN's CV joint range?
NTN is one of the world's largest CV (Constant Velocity) joint manufacturers — both inner (tripod) and outer (Rzeppa-type) CV joints for automotive driveline applications. OEM supply to many Japanese and global vehicle manufacturers. For workshop automotive replacement, NTN CV joints often interchange with the brand stamped on the original (which may itself be NTN). For axle service work, NTN is a common workshop choice. AIMS stocks specific CV joint applications on request.
Q: Are NTN bearings counterfeited?
Yes — like all premium bearing brands. Counterfeits look identical but fail at 10-30% of rated life. Buy through authorised distributors — AIMS sources NTN through verified supply channels. For critical applications, request batch traceability documentation. Suspiciously low prices indicate counterfeits — genuine premium-brand bearings trade at predictable price points. For machine tool, mining, and automotive driveline applications, the cost of bearing failure (downtime, secondary damage) makes counterfeits the most expensive cheap option.