This page covers 6 IKO CRY Series inch non-separable roller followers (track rollers) (CRY12VUUR to CRY64VUUR, 1/4 to 1 1/4 in bore): full complement needle rollers, sealed type construction and a crowned outer ring. Choose the size in the options above; each variant has its own dimensions and ratings in the Model Details. The CRY series is the inch series non-separable roller follower: a full complement type with a black oxide surface treatment, with side plates fixed on both sides of the inner ring. A roller follower (track roller) is a bearing designed for outer ring rotation, with rollers inside a thick-walled outer ring. The outer ring runs directly on the mating cam guide surface, and roller followers are widely used in cam mechanisms and in linear motions of conveying equipment. In the part number, V marks the full complement type, UU the sealed type and R the crowned outer ring. The size number is the outer ring diameter in 1/16 inch. Every model on this page is sealed type with a crowned outer ring. Where this product is used Cam mechanisms, with the outer ring running directly on the cam guide surface Linear motions of conveying equipment Follower and track roller positions on a shaft Features Inch series non-separable roller follower with inner ring and a black oxide surface treatment Full complement needle rollers: suited to heavy loads at low speed rotations Sealed type: synthetic rubber seals in the clearances between side plates and outer ring keep dust and dirt out Crowned outer ring (R): moderates the edge load caused by mounting errors Prepacked with grease Basic dynamic load rating C 8,710 to 142,000 N and static load rating C0 12,300 to 317,000 N (each size in the Model Details) Track capacity 853 to 16,800 N on a 40 HRC mating surface Key specifications Specification Detail Type Inch series non-separable roller follower (track roller) with inner ring Models CRY12VUUR to CRY64VUUR (6 sizes) Bore (shaft) diameter d 6.35 to 31.75 mm (1/4 to 1 1/4 in) Outer ring diameter D 19.05 to 101.6 mm (3/4 to 4 in) Width B 14.288 to 58.738 mm (0.5625 to 2.3125 in) Outer ring width C 12.7 to 57.15 mm (1/2 to 2 1/4 in) Rolling elements Full complement needle rollers Seal Sealed type (UU in the part number) Outer ring Crowned outer ring (R in the part number) Basic dynamic load rating C 8,710 to 142,000 N Basic static load rating C0 12,300 to 317,000 N Track capacity (mating surface 40 HRC) 853 to 16,800 N Lubrication Prepacked with grease Brand IKO (Nippon Thompson Co., Ltd., Japan) Available sizes Model Bore d mm (in) OD D mm (in) Width B mm (in) Width C mm (in) C (N) C0 (N) Mass (g) CRY12VUUR 6.35 (1/4) 19.05 (3/4) 14.288 (0.5625) 12.7 (1/2) 8,710 12,300 24 CRY14VUUR 6.35 (1/4) 22.225 (7/8) 14.288 (0.5625) 12.7 (1/2) 8,710 12,300 34 CRY16VUUR 7.938 (5/16) 25.4 (1) 17.463 (0.6875) 15.875 (5/8) 13,100 22,700 56 CRY28VUUR 12.7 (1/2) 44.45 (1 3/4) 26.988 (1.0625) 25.4 (1) 35,300 55,600 276 CRY32VUUR 15.875 (5/8) 50.8 (2) 33.338 (1.3125) 31.75 (1 1/4) 45,700 80,600 442 CRY64VUUR 31.75 (1 1/4) 101.6 (4) 58.738 (2.3125) 57.15 (2 1/4) 142,000 317,000 3,190 Sizes are in mm with the inch size in brackets. C is the basic dynamic load rating and C0 the basic static load rating. Selecting the right option Pick the outside diameter (D, in inches) in the options above. The Model Details give the bore, widths and shaft diameter ranges in mm with the inch size in brackets. This page is the crowned outer ring type (R in the part number). The crowned ring is effective in moderating the edge load caused by mounting errors. Every model here is the full complement type, which is suited to heavy loads at low speed rotations. Fitting and use For the sealed type, match the side surface correctly to the mating seating surface given by dimension a in the Model Details and fix it. The mounting part should make even contact with the entire side plate surface: uneven contact may increase rotational torque and shorten the service life. Keep the oil hole of the inner ring out of the loading zone, which can lead to a short bearing life. The shaft diameter ranges for push, drive and press fits are in the Model Details for each size. Lubrication: the models on this page are prepacked with grease. Track capacity is the load that can be applied continuously on a steel cam guide surface of 40 HRC without deforming or indenting it. For a different hardness it is multiplied by the track capacity factor (0.45 at 30 HRC): ask AIMS if you need the factor for your guide surface. If you are unsure which size suits your cam track and mounting, send AIMS the part number or the dimensions and we will help you confirm it. Related products Other IKO CRY series pages (other outer ring, rolling element, seal or material types): CRY series inch roller followers, full complement, sealed, cylindrical, 1/4 to 1 1/4 in bore. Related roller followers: NART series roller followers, full complement, sealed, crowned, 5 to 50 mm bore and NURT series cylindrical roller followers, full complement, shield type, crowned, 15 to 45 mm bore.
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