High-pressure blowers and high-speed blowers from DC BLOWER typically use deep groove ball bearings from Japan's NMB Corporation. Given the wide variety of NMB bearing models, the following provides a general explanation of the selection process to help understand how we choose bearings.
Taking the ball bearing model R-1240KK1B28MTRPOP13LY551 used in the high-pressure blower BA8060 as an example, the details are explained as follows:
R | 1240 | KK | |
No indication SUJ2 or equivalent bearing steel DD Stainless steel belonging to the martensitic stainless steel group KK MKJ3 steel | Deep groove ball bearings (metric size) R - (RF -) thick type (thick flange type) L - (LF -) thin (thin flange type) A-Extremely thin RNR outer ring with stop ring thick type LNR - Thin outer ring with stop ring | size | Z-steel plate dust cover, spring coil type K steel plate dust cover, compression type S non-contact rubber seal P contact rubber seal P non-contact plastic seal When installing in both directions, use repeated codes to indicate. Example: ZZ |
MT | R | PO | P13 |
W is a model wider than the standard model Y is a model narrower than the standard model SD Special Design Specification MT low-noise motor specificatio-ns GT computer hard drive motor s-pecifications | R-waveform holder H-shaped retaining frame MN resin holder | Metric Size Series PO: JIS Level 0 P5: JIS Level 5 | PXX radial clearance |
LY551 | |||
LO1 -50~+120 LY13 -40~+200 LY72 -50~+150 LY121 -50~+150 LY349 -40~+125 LY439 -50~+150 LY500 -50~+260 LY532 -40~+180 LY551 -40~+200 LY552 -40~+130 LY586 -50~+220 LY650 -40~+130 LY655 -50~+200 LY694 -20~+150 LY705 -40~+125 LY714 -40~+165 |
