The NSK After Purchase Code
    (1) the internal structure of A - interior design and standards of different bearings. A - angular contact ball bearings, the contact angle of 30 degrees. A5 - angular contact ball bearings, the contact angle of 25 degrees. B - angular contact ball bearings, the contact angle of 40 degrees. C - angular contact ball bearings, the contact angle of 15 degrees. C - tapered roller bearings, the contact angle of 20 degrees. D - tapered roller bearings, the contact angle of 28 degrees. C and CA (with brass entity Cage), CD (with stamping cage) - and high load-aligning roller bearings. E - high load cylindrical roller bearings. H - high load thrust-aligning roller bearings. J - tapered roller bearings, the small end of the outer ring raceway diameter, angle, outer ring width is consistent with ISO regulations.
    (2) material g - ring, rolling body for carburizing steel. H - rings, rolling element made of stainless steel.
    (3) cage M - copper alloy solid cage. T - synthetic resin cage. W - stamping cage. V - no cage.
    (4) seals, dust cover Z, ZS - side with steel dust cover. ZZ, ZZS - both sides with steel dust cover. D, of DU - side with a contact rubber seals. DD, DDU - both sides with a contact rubber seals. V - side with a non-contact rubber seals. VV - on both sides with a non-contact rubber seals.
    (5) The ring shape of the K - tapered bore, taper 1:12 K30 - tapered bore, taper 1:30. E - rings on the cut or hole. E4 - with the fuel tank, the hole in the outer. N - the outer ring outside diameter of the groove. NR - the outer ring outside diameter with a groove and snap ring.
    (6) co-ordination and liner DB - back to back installed in pairs. DF - face to face in pairs installed. DT - series installed in pairs. K - the outer ring with gasket. L - inner belt liner. KL - inner and outer rings with the pad.
    (7) clearance C1 - Radial Bearing radial clearance, smaller than the C2 clearance. C2 - Radial Bearing radial clearance, clearance than the standard. CN (omitted) - Radial Bearing radial standard clearance. C3 - Radial Bearing radial clearance, clearance than the standard. C4 - Radial Bearing radial clearance than C3 clearance. C5 - Radial Bearing radial clearance than C4 clearance. CC1 - cylindrical roller bearing (not interchangeable) radial clearance smaller than the CC2 clearance. CC2 - cylindrical roller bearing (not interchangeable) radial clearance, clearance than the standard. CC - cylindrical roller bearings (not interchangeable) radial standard clearance. CC3 - cylindrical roller bearing (not interchangeable) radial clearance, clearance than the standard. CC4, - cylindrical roller bearing (not interchangeable) radial clearance, clearance than CC3. CC5 - cylindrical roller bearing (not interchangeable) radial clearance than CC4 clearance. MC1 - small, miniature ball bearing radial clearance smaller than the MC2 clearance. MC2 - small, miniature ball bearing radial clearance smaller than the MC3 clearance. MC3 - small, miniature ball bearings radial clearance Standard clearance. MC4 - a small, miniature ball bearing radial clearance than MC3 clearance. MC5 - small, miniature ball bearing radial clearance, clearance than the MC4. MC6 - small, miniature ball bearing radial clearance than the MC5 clearance. CM - motor with deep groove ball bearings, cylindrical roller bearing radial clearance. CT - Motor cylindrical roller bearing radial clearance.
    (8) tolerance class P0 (omitted) - tolerance class 0 in accordance with the provisions of JIS standard. P6 - tolerance class in accordance with the provisions of JIS standard 6. P6X - tolerance class in accordance with JIS standard of 6X. P5 - Tolerance class 5 in accordance with the provisions of JIS standard. P4 - tolerance class in accordance with JIS standards 4. P2 - Tolerance class 2 in accordance with the provisions of JIS standard.
    (9) special specifications X26 - use temperature is limited to below 150 degrees Celsius. X28 - use temperature is limited to below 200 degrees Celsius. X29 - use temperature is limited to below 250 degrees Celsius. S11 - aligning roller bearings, the use temperature is limited to below 200 degrees Celsius.


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