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What is the nomenclature for Precision Bearings (P4, P5, Tolerances)?; What is the difference between T & D1 or what is the designation for an oil hole? . Paired arrangements for angular contact bearings are designated as “D2” (universal flush ground pair), “DB” (matched back-to-back pair), “DF” (matched face-to-face
These bearings support the radial loads and both direction of axial loads. Back-to-back duplex arrangement. (Code: DB). Face-to-face duplex arrangement 7336B. A. 155. 40.9. 240. 24. −. 1.5. 1. 30. 85.0. 116. 8,650. 11,800. 7838. A. 74. 2.55. 255. 33. 29. 2.5. 1.5. 40. 108. 138. 11,000. 14,100. SF3806. F. 108. 4.16.
Technical Data. NTN. PRECISION. ROLLING. BEARINGS. Main Spindle. Bearings. Ball Screw Support. Bearings. APPENDIX. NTN PRODUCTS Db. 2. Table 2.9 Fundamental tolerance IT. Classification of nominal dimension mm. Fundamental tolerance IT value μm over incl. 6. 10. 18. 30. 50. 80. 120. 180. 250. 315. 400.
DB: Duplex pair, back to back mounting. DF: Duplex pair, face to face mounting. DT: Duplex pair, tandem mounting. G: Single bearings, flush ground universal .. 5.79 80,000 100,000 1,700 2,300. 77.8. 1,400. 1,800. 170. 360. 72. 4. 1.5. 147. 7336B. 7.0866 14.9606 2.9528 0.157 0.059. 6.10 84,000 110,000 1,600 2,100.