Technical

Headquartered in Osaka, Japan, NTN is a leading manufacturer of precision mechanical parts and components. Particularly in the world bearing market, NTN has the largest market share of hub bearings an

JTEKT North America's technologies contribute to the movement of diverse industries in the forms of Automotive Systems and Components, Bearings, Machine Tools and Mechatronics.MANUFACTURING INNOVA

NSK has two core business segments─the Industrial Machinery Business (industrial machinery bearings, precision machinery and parts) and the Automotive Products Business (automotive bearings, automoti

The product spectrum includes rolling and plain bearings, linear and direct drive technology, as well as service features such as maintenance products and monitoring systems.The Industrial division of

The Timken Company is a global industrial leader with a growing portfolio of engineered bearings and power transmission product brands. With more than a century of knowledge and innovation,we continuo

Inner ringdtΔds, tΔdmp1)2)tVdsptΔBstVBstKiatSd≤ULULmmµmµmµmµmµmµm–180–530–10053818300–630–10053830500–840–12054850800–950–150648801200–1050–2007591201800–1370–25086101802500–1580–300108112503150–1890–3501310133154000–23120

Bore diameterHousingUnit seriesMetricInchSeriesMaterialStandardYET 2standard seals (fig. 1)standard grease (VT307)✔–SY .. M ( fig. 2 )Cast ironISOSY .. FM–✔SY .. U1) (fig. 3)ISO2)–✔SYH .. U1) (fig. 3)SYH .. FM✔–SYF ( fig. 4 )Not standard

Inner ringdtΔdmp1)tΔds2)tVdsptVdmptΔBstVBstKiatSdtSiaAllNormalModified3)≤ULULULLmmµmµmµmµmµmµmµmµmµm2,5100–2,50–2,52,51,50–40–2501,51,51,51,510180–2,50–2,52,51,50–80–2501,51,51,51,518300–2,50–2,52,51,50–120–2501,52,51,52,5305

Inner ringdtΔdstVdsptVdmptΔHstΔH1stKiatSi≤ULULULmmμmμmμmμmμmμmμm50800–953,50–17525–2533801200–10640–17525–25331201500–13850–17530–30331501800–13850–17530–30441802500–15960–20030–30442503150–181180–40040–40663154000–23141

Bore diameterRadial internal clearanceBearings with a cylindrical boreBearings with a tapered boredC1SPC2NormalC3C1SPC2overincl.min.max.min.max.min.max.min.max.min.max.min.max.mmµmµm243051510252045356015252535304051512252550457015252540405051815303