GRWs product catalouge

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Explanation of Basic Terms Closure – Protects the interior of the ball bearing against contamination and the components surrounding the ball bearing against escaping lubricant. The protection grade depends on the type of closure chosen and on the operating conditions. You will find more information on this in the chapter “Closures”. Alignment – Mounting configuration where the axes of the two bearings are identical. Retainer – A ring with equally spaced ball pockets, which seperates the balls from each other in the bearing raceway. Combined Load – A force which is neither purely radial nor axial in nature, but simultaneously perpendicular and parallel to the axis. Ball Pockets – The inner surfaces of a retainer which touch the ball surfaces. Raceway Profile – The form of the raceway as seen in cross section. Roundness – The roundness deviation is calculated by measuring the radius deviation using scanning equipment. You will find detailed information on this among other places in DIN ISO 4291 and DIN ISO 6318. Curvature – The proportion of the radius of the raceway profile to the diameter of the ball. Angular Contact Bearing, non-separable (AC ball bearing) – Bearings with inner or outer ring lands relieved to facilitate snap-in assembly. This bearing, similar to a magneto bearing, can take axial loads in one direction only. Angular Contact Bearing, separable (L2T ball bearing) – Bearings with inner ring land relieved to facilitate removal of inner ring. The ball set is held in the outer ring by a special retainer. This bearing, similar to a magneto bearing, can take axial loads in one direction only. Quality Grade – Term for the tolerances of a ball bearing. The individual tolerance values are defined in various standards such as DIN 620 T1, ISO 492, ISO 1224, AFBMA Std. 12 and 20. The definitions of the terms are defined among other places in DIN ISO 1132 and the measuring method in DIN 620 T1 and ISO TR 9274. Full Complement Bearing – A bearing with a maximum number of balls. These bearings have no retainer. See the chapter “Retainer Types” about the different types. Curvature [%] = 100 x radius of raceway profile ball diameter 68
Width B Flange width FB Chamfer r r Flange Dia. FD Outer ring Land Dia. Ds Pitch circle Dia. Inner ring Land Dia. Ds r r Bore Dia. d Outside Dia. D Inner raceway Closure Outer raceway Circlip Ball Retainer Fig. 28: Ball bearing parts 69
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Information given in earlier catalo
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The Company The company headquarter
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Product Range Deep Groove Radial Be
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The GRW Numbering System Material T
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Deep Groove Ball Bearings - metric
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Page 20 and 21: Deep Groove Ball Bearings - metric
Page 28 and 29: Deep Groove Ball Bearings - inch un
Page 30 and 31: Deep Groove Ball Bearings - inch wi
Page 36 and 37: Tolerance Table Definition Dimensio
Page 38 and 39: Special Bearings Thanks to its flex
Page 40 and 41: Accessories Type: stainless steel s
Page 42 and 43: Retainers for Miniature Ball Bearin
Page 44 and 45: Closures Ball bearing closures fulf
Page 46 and 47: Lubrications Selecting the right lu
Page 48 and 49: Functional Tests Functional tests o
Page 50 and 51: Limiting Speeds The maximum speed f
Page 52 and 53: Bearing Capacities Static Bearing C
Page 54 and 55: Mounting of Bearings Flanged Ball B
Page 56 and 57: Fitting The fits of the ball bearin
Page 58 and 59: Reduction in Radial Clearance Reduc
Page 60 and 61: Calibration of Bore and Outside Dia
Page 62 and 63: Relationship between Radial Clearan
Page 64 and 65: Duplex Bearings Duplex bearings are
Page 66 and 67: The misalignment of a bearing is th
Page 68 and 69: Packaging The packaging protects th
Page 72 and 73: A Glance at the GRW Production Plan
Page 74 and 75: Index Page AC Bearings 41 Accessori
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GRWs product catalouge

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