The post code of NSK bearing clarifies

Source: China Bearing Network Time: 2014-03-18

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NSK rear code. 1) Internal structure A internal drawing is different from the standard bearing. A angular touch ball bearing; touch angle is 30 degrees. A5 angular touch ball bearing; touch angle is 25 degrees. B angle touch ball bearing; Angle is 40 degrees. C-angle touch ball bearing; touch angle is 15 degrees. C Tapered roller bearing; touch angle is 20 degrees. D Tapered roller bearing; touch angle is 28 degrees. C; CA (with brass body retention (CD) with high load spherical roller bearing. E High load cylindrical roller bearing. H High load thrust spherical roller bearing. J Tapered roller bearing outer ring raceway small end diameter ; view point; outer ring width is common with ISO rules.
.2) Information g ferrule; the rolling body is carburized steel. H ferrule; the rolling body is stainless steel.
.3) cage M copper alloy solid cage. T synthetic resin cage. W stamping cage. V without cage.
.4) sealing ring; dust cover Z; ZS with steel dust cover on one side. ZZ; ZS with steel dust cover on both sides. D; DU with touch rubber seal on one side. DD; DDU with touch rubber on both sides Sealing ring. V One side with non-touch rubber sealing ring. VV with non-touch rubber sealing ring on both sides.
.5) ferrule shape K conical hole; taper 1:12. K30 conical hole; taper 1:30. E ferrule has cut or oil hole. E4 outer ring with oil groove; oil hole. N outer ring outer diameter band Stop groove. NR outer ring outer diameter with stop groove; stop ring.
.6) Cooperative and padded DB back-to-back pairing device. DF face-to-face paired device. DT series paired device. +K outer ring with padding. +L inner ring with padding. +KL inside; outer ring with padding .
.7) Radial clearance of clearance C1 radial bearing; smaller than C2 clearance. C2 radial bearing radial clearance; smaller than gauge clearance. CN (saving) radial bearing radial gauge clearance. C3 Radial clearance of radial bearing; larger than gauge clearance. C4 radial bearing radial clearance; larger than C3 clearance. C5 radial bearing radial clearance; larger than C4 clearance. CC1 cylindrical roller bearing ( Non-exchange) radial clearance; smaller than CC2 clearance. CC2 cylindrical roller bearing (not exchangeable) radial clearance; smaller than gauge clearance. CC cylindrical roller bearing (not exchangeable) radial gauge clearance. CC3 Cylindrical roller bearings (not exchangeable) radial clearance; larger than the gauge clearance. CC4 cylindrical roller bearings (not exchangeable) radial clearance; larger than CC3 clearance. CC5 cylindrical roller bearings (not exchangeable) radial Clearance; larger than CC4 clearance. MC1 small; miniature ball bearing radial clearance; smaller than MC2 clearance. MC2 small; miniature ball bearing radial clearance; smaller than MC3 clearance. MC3 small; miniature ball bearing diameter Specification clearance to clearance. MC4 small; radial clearance of miniature ball bearings; larger clearance than MC3. MC5 small; radial clearance of miniature ball bearings; MC4 small clearance; MC6 small; radial clearance of miniature ball bearings; larger than MC5 clearance. Deep groove ball bearings for CM motors; radial clearance of cylindrical roller bearings. Radial of cylindrical roller bearings for CT motors Clearance.
.8) Public service level P0 (sold out) The public service level corresponds to level 0 of the JIS code. P6 The public service level fits the 6th level of the JIS code. P6X The public service level fits the 6X level of the JIS specification. P5 Public service level Corresponds to the 5th level of the JIS Code. P4 The level of public service is in line with the 4th level of the JIS Code. P2 The level of public service corresponds to Level 2 of the JIS Code.
.9) Special standard X26 uses temperature constraint below 150 degrees Celsius. X28 uses temperature constraint below 200 degrees Celsius. X29 uses temperature constraint below 250 degrees Celsius. S11 spherical roller bearing; use temperature constraint below 200 degrees Celsius.

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