Angular contact ball bearings

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RKB ball bearings

The ball bearings (BBs) manufactured by RKB come in many designs, dimensions and series. They are conceived to withstand combined loads and high speeds, covering most requirements in a number of standard and special industrial applications. All RKB BBs are made from high quality materials and special heat treatments
for superior performance.
Available in single and double row con guration, in open or sealed version, they are low-maintenance, which makes them an irreplaceable cost-effective solution in many cases. For large size BBs, RKB can also apply Bainite Hardening Treatment (HB) and High Temperature Dimensional Stabilization (S) on rings and balls. The bearing dimensional and running accuracy conforms to ISO/ABMA/
GOST speci cations.

Angular contact ball bearings

The angular contact ball bearings (ACBBs) produced by RKB are used in a wide array of machines where combined loads, high speeds and runout accuracy are required. Available in single or double row con guration, they can be manufactured with different types of cage (machined brass, pressed steel or polyamide) and dimensional precisions.
Single row ACBBs can be directly paired by RKB in face-to-face (DF) or back- to-back (DB) con guration, depending on load conditions, presence of tilting moments and misalignment magnitude in the application.

 

M type Angular ball bearings

One-piece inner and outer ring One-piece machined brass cage guided on balls (M) Available with machined brass cage guided on inner ring (MB)
Single non-universal bearing execution Suitable for very high operating speeds Available with 25°, 30° or 40° contact angle

QJ type Angular ball bearings

One-piece outer ring Two-piece inner ring circumferentially split One-piece machined brass cage guided on outer ring (MA)
Supports only axial loads
Two locating slots (N2)
Available also with one-piece inner ring and two-piece outer ring (Q)

DB type Angular ball bearings

Back-to-back arrangement (DB) of two ACBBs One-piece machined brass cage guided on balls (M) Preset or adjusted BEP on customers request Available with machined brass cage guided on inner ring (MB)
Available with inner and/or outer spacers featuring lubrication grooves and/or lubrication holes
Stiffer arrangement to withstand tilting moments

DF type Angular ball bearings

Face-to-face arrangement (DF) of two ACBBs One-piece machined brass cage guided on balls (M)
Preset or adjusted BEP on customers request Available with machined brass cage guided on inner ring (MB)
Available with inner and/or outer spacers featuring lubrication grooves and/or lubrication holes

DB+ZZ type Angular ball bearings

Double row ACBB back-to-back arrangement (DB) Non-separable shielded design (ZZ)
Moulded glass  ber reinforced polyamide snap-in cage guided on balls (TN)
Available with lubrication holes in the inner ring
Shielded type to keep the grease inside the
bearing without compromising the limiting speed Supports high combined loads

DFM type Angular ball bearings

Double row ACBB face-to-face arrangement (DF) Non-separable open design
One-piece machined brass cage guided on inner ring (MB)
Lubrication grooves and holes in outer rings Supports high combined loads