Weight (kg):0.056 Product Properties: Seal:No Seal: Cage Type:P - Plastic Molded Cage: Precision:P5 Precision (Higher than P6): Contact Angle:30 degrees: Pairing:DB - O-arrangement, 2: Axial Internal Clearance / Preload:GB - Medium Preload: Lubrication:Standard Lubrication
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Angular Contact Ball Bearings NSK offers one of the most comprehensive ranges of Angular Contact Ball Bearings which have been designed to meet original equipment manufacturers' demanding requirements. These bearings have a contact angle which enables them to withstand significant axial loads in one direction Performance Comparison of Each type of Bearing (Bore size–70mm DB combination L preload). The Effect of Preload. Preload affects performance of ACBBs in much the same way that the contact angle does. As preload increases the rigidity increases but the speed capability decreases. NSK has defined standard
expected please consult with NSK for selection of the bearings. TOLERANCES AND RUNNING . the DB Type. Tandem. (DT). (Example). 7208 A DT. Radial loads and axial loads in one direction can be sustained. Since two bearings share the axial load this arrangement is used when the load in one direction is heavy. NSK > Spindle bearings Super Precision > High Speed ball bearings. bearing front faces and Tandem with lines of force being parallel. The symbols for these are. DB DF and DT arrangements respectively. (Fig. 1). DB and DF arrangement sets can take axial loads in either direction. Since the distance of the load centers of DB bearing set is longer than that of DF bearing set they are widely. Introduction to Revised NSK Rolling Bearing Catalog. (.No. .. have the outer ring faces together (type DF) back to back (type DB) or both front faces in the . operating conditions or harsh environments please consult with NSK. The following diagram (Fig.2.1) shows an example of the bearing selection procedure. 2. NSK is one of the leading companies with a long tradition in patent new NSKHPS fully incorporate the advantages of NSK's worldclass design materials (cc). Limiting. Axial. Load. (kN). Preload. (DB DF Arrange ment) (N). Axial Rigidity. (DB DF Arrange ment) (N/μm). Starting Torque. (N•m). Bearing. Numbers d. D. B. sets (DB). Rear side Ultra high speed single row cylindrical roller bearing. (In case of angular contact ball bearings either position or constant pressure preload is applicable). Spindles with this arrangement are suited for ultra high speed operation and use position preload. They achieve higher radial and axial rigidity. Angular Contact Ball Bearing Combinations Available. Normally NSK supplies matched super precision angular contact ball bearings as 2 3 and 4 row combinations. The combinations available for the fixed end of spindles are usually 2 rows (DB) 3 rows (DBD) and 4 rows (DBB) sets. However in the case of 3 row.
