FC FCB RC RCB Drawn cup needle roller bearings
A Drawn Cup Needle Roller Bearing is a type of rolling-element bearing characterized by its thin-walled, drawn (stamped) outer ring and slender needle-shaped rollers.
Key Components and Structure
Outer Ring: Made by cold-drawing steel into a cup-shaped, thin-walled shell, eliminating the need for a traditional machined outer ring.
Rollers: Long, thin needles (ratio of length to diameter ≥ 3:1) that maximize contact area with the raceway.
Cage (Optional): Some designs use a cage to space rollers and reduce friction, while others rely on the outer ring and shaft for guidance.
FC, FCB | RC, RCB |
Bearing | Mass Approx |
Designation | Bearing Designation | Mass Approx |
Designation |
Fw | D | C | Torgue Ma | Fw | D | C | Torgue Ma |
g | mm | Nm | g | mm | Nm |
FC4K | 1 | 4 | 8 | 6 | 0.34 | RC040708 | 3.5 | 6.35 | 11.112 | 12.7 | 1.9 |
FC6 | 3 | 6 | 10 | 12 | 1.76 | RC040708-FS | 3.5 | 6.35 | 11.112 | 12.7 | 1.9 |
FC6K | 3 | 6 | 10 | 12 | 1.76 | RC061008 | 4.7 | 9.525 | 15.875 | 12.7 | 4.83 |
FC8 | 4 | 8 | 14 | 12 | 5.3 | RC061008-FC | 4.7 | 9.525 | 15.875 | 12.7 | 4.83 |
FCL8K | 3.5 | 8 | 12 | 12 | 5 | RC081208 | 9.2 | 12.7 | 19.05 | 12.7 | 7.9 |
FC10 | 4.8 | 10 | 16 | 12 | 6 | RC081208-FS | 9.2 | 12.7 | 19.05 | 12.7 | 7.9 |
FCL10K | 4 | 10 | 14 | 12 | 5.3 | RC101410 | 14.5 | 15.875 | 22.225 | 15.88 | 15.4 |
FC12 | 11 | 12 | 18 | 16 | 12.2 | RC101410-FC | 14.5 | 15.875 | 22.225 | 15.88 | 15.4 |
FC14K | 13 | 14 | 20 | 16 | 17.3 | RC121610 | 17 | 19.05 | 25.4 | 15.88 | 20.9 |
FC16 | 14 | 16 | 22 | 16 | 20.5 | RC121610-FS | 17 | 19.05 | 25.4 | 15.88 | 20.9 |
FC20 | 17 | 20 | 26 | 16 | 28.5 | RC162110 | 16.2 | 25.4 | 33.338 | 15.88 | 45 |
FC25 | 30 | 25 | 32 | 20 | 66 | RC162110-FC | 16.2 | 25.4 | 33.338 | 15.88 | 45 |
FC30 | 36 | 30 | 37 | 20 | 90 | RCB061014 | 12 | 9.525 | 15.875 | 22.22 | 4.83 |
FC35 | 40 | 35 | 42 | 20 | 121 | RCB061014-FS | 12 | 9.525 | 15.875 | 22.22 | 4.83 |
FCB8 | 10 | 14 | 14 | 20 | 5 | RCB081214 | 16 | 12.7 | 19.05 | 22.22 | 7.9 |
FCB10 | 15 | 16 | 16 | 20 | 10 | RCB081214-FC | 16 | 12.7 | 19.05 | 22.22 | 7.9 |
FCB12 | 18 | 18 | 18 | 26 | 12.2 | RCB101416 | 21.3 | 15.875 | 22.225 | 25.4 | 15.4 |
FCB16 | 22 | 22 | 22 | 26 | 20.5 | RCB101416-FS | 21.3 | 15.875 | 22.225 | 25.4 | 15.4 |
FCB20 | 27 | 26 | 26 | 26 | 28.5 | RCB121616 | 26.5 | 19.05 | 25.4 | 25.4 | 20.9 |
FCB25 | 44 | 32 | 32 | 30 | 66 | RCB121616-FC | 26.5 | 19.05 | 25.4 | 25.4 | 20.9 |
FCB30 | 51 | 37 | 37 | 30 | 90 | RCB162117 | 44.8 | 25.4 | 33.338 | 26.99 | 45 |
FCB35 | 58 | 42 | 42 | 30 | 121 | RCB162117-FS | 44.8 | 25.4 | 33.338 | 26.99 | 45 |
Product features and benefits
Compact structure: The drawn cup needle roller bearings using thin-walled stamping outer ring and slender needle roller design, the radial size is very small. Under the same inner diameter and load capacity, the outer diameter is the smallest of the same type of bearings, which is suitable for radial space limited scenarios.
High load: needle roller number and large contact area with the raceway, can withstand high radial load, suitable for heavy load conditions.
Convenient installation: most of drawn cup needle roller bearings have no inner ring structure, which can be used directly with the hardened journal to simplify the assembly process and reduce the cost.
Lightweight advantage: the stamping outer ring material is light and thin, and the overall weight is light, which is beneficial to the lightweight design of the equipment and reduces the running inertia.
Widely used: Drawn cup needle roller bearings are commonly used in automobile gearbox, agricultural machinery transmission, hydraulic pump, machine tool spindle and other mechanical systems that need compact radial support.
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