General materials and data for NACHI spherical roller bearings
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General materials and data for NACHI spherical roller bearings
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[U.S.] NACHI spherical roller bearings are manufactured according to the general public service specifications. NACHI Explorer spherical roller bearings with an inner diameter of 300 mm or less; bearings with cylindrical or tapered bores are based on higher specifications than general-grade public service. Production; for example: the width of the public service is more severe than the ISO general-grade public service. The rotation accuracy is based on the P5-class public service in the larger bearing equipment; the rotation accuracy is a critical operating parameter; the NACHI can be based on the P5-level rotation accuracy of the spherical surface. Roller bearings. These bearings are suffixed with C08. NACHI Explorer spherical roller bearings for oscillating machinery; the internal diameter of the civil service is P6.
[Internal clearance] NACHI-specified spherical roller bearings are generally group radial clearance; most types can supply larger C3 group clearances. In addition; many types can also supply smaller C2 group clearances or larger C4 or C5 group clearance.
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