Bearings

Bearings

• Miniature bearings
• Ball bearings
• Double-row ball bearings
• Oblique contact ball bearings
• Oblique contact double-row ball bearings
• Pivot ball bearings
• Precision ball bearings
• Roller bearings
• Special roller bearings
• Precision roller bearings
• Pivot spherical bearings
• Needle bearings
• Guide pulleys
• Axial bearings
• Spherical bearings – Joint heads
• Linear bearings
• Linear guiding systems
• Bearing housings
• Tapered roller bearings
• Tapered roller bearing units
• Plain bearings (self-lubricating, Teflon, brass, bronze)
• Ceramic bearings (non-conductive)
• Plastic bearings
• High-temperature bearings (for all environments and temperatures)
• Special bearings

Spherical bearings

• Spherical bearings with threaded
• * male rod ends left / right
• * female rod ends left / right
• with integral double-row ball bearing
• with integral roller bearing
• ball joints
• clevis joints
• Angular Contact Spherical Plain Bearings
• Fork Heads
• fits of angular contact spherical plain bearings
• slide flange bushings

Differences in internal structure

• AA- oblique contact single-row ball bearing, contact angle α=26°, e.g. B7v220AATB P5
• B- oblique contact single-row ball bearing, contact angle α=40°, e.g. 7304B
• single-row tapered roller bearing, contact angle α> 17°, e.g. 32315B
• BE- oblique contact single-row ball bearing, contact angle &=40, in a new structural design, e.g. 7010BETNG
• C- oblique contact single-row ball bearing, contact angle &=15, e.g. 7220CTB P4
• double-row spherical bearing in a new structural design, e.g. 22v226C
• CA- oblique contact single-row ball bearing, contact angle, α=12°, e.g. B7202CATB P5
• CB- oblique contact single-row ball bearing, contact angle α= 10°, e.g. B7206CBTB P4
• D- single-row ball bearing, type 160 for higher loads, e.g. 16004 D
• E- single-row roller bearing for higher loads, e.g. NU209E
• double-row spherical bearing for higher loads, e.g. 22v225 E
• axial spherical bearing for higher loads, e.g. 29416 EJ




Shields or seals

• RS - seal on one side, e.g. 6304RS
• 2RS – seal on both sides, e.g. 6204-2rs
• 2RSR - seal on one side adjacent to the smooth rib of the inner ring, e.g. 608-2RSR
• Z - shield on one side, e.g. 6206Z
• 2Z – shields on both sides, e.g. 6304-2Z
• ZN - shield on one side and the length for the snap ring on the outer ring on the side opposite to the shield, e.g. 6208ZN
• ZR - shield on one side and the smooth rib of the inner ring, e.g. 608ZR
• 2ZR - shields on both sides and smooth ribs of inner rings, e.g. 608-2ZR



Structural variation in bearing rings

• K - tapered bearing bore at a 1 : 12 ratio, e.g. 1207K
• K30 - tapered bearing bore at a 1 : 30 ratio, e.g. 23164K30M
• N - snap ring groove on the outer ring, e.g. 6310N
• NR - snap ring groove on the outer ring and inserted locking ring, e.g. 6310NR
• D - split inner ring of a bearing, e.g. 3309D
• W33 - groove and lubrication holes on the outer ring, e.g. 23148W33M





Cages

• J- moulded cage made of steel plate, guided on the rolling elements, e.g. 6034J
• J2- moulded cage made of steel plate, guided on the rolling elements, new structural design
of single-row tapered roller bearings, e.g. 30206AJ2
• Y- moulded cage made of brass plate, guided on the rolling elements, e.g. 6001Y
• F- solid cage made of steel, guided on the rolling elements, e.g. 6418F
• L- solid cage made of light metal, guided on the rolling elements, e.g. NG180L C3SO
• M- solid cage made of brass or bronze, guided on the rolling elements e.g. Nu330M
• T- solid cage made of brass or bronze, guided on the rolling elements, e.g. 6005T P5
• TN- solid cage made of polyamide or similar plastic, guided on the rolling elements, e.g. 6207TN
• TNG- solid cage made of polyamide or similar plastic with glass fibre, guided on the rolling elements, e.g. 2305TNG
• Design of the cage (symbols are always used based on cage material symbols)
• A- cage guided on the outer ring, e.g. NU226MA
• B- cage guided on the inner ring, e.g. B7204CATB P5
• P- solid window cage, e.g. NU1060MAP
• H- single-piece open cage, e.g. 629TNH
• S- cage with lubrication grooves, e.g. NJ418MAS
• V- bearing without a cage with the full number of rolling elements, e.g. NU209V





Tolerance class

• P0- normal tolerance class (not designated), e.g. 2205S
• P6- higher tolerance class than normal, e.g. 6322 P6S
• P5- higher tolerance class than P6, e.g. 6201 P5S
• P4- higher tolerance class than P5, e.g. B72206CBTB P4S
• P2- higher tolerance class than P4, e.g. B7200CBTB P2S
• P6E- higher tolerance class for rotating electrical machines, e.g. 6204 P6EéS
• P6X- higher tolerance class for individual tapered roller bearings, e.g. 30v220A P6XS



Clearance

• C2- clearance less than normal, e.g. 608 C2
• - normal clearance (not designated), e.g. 6204
• C3- clearance greater than normal, e.g. 6310 C3
• C4- clearance greater than C3, e.g. NU320M C4
• C5- clearance greater than C4, e.g. 22330M C5
• NA- radial bearing clearance with non-interchangeable rings (always stated after the radial clearance class symbol), e.g. NN3024K P41NA
• R– radial clearance with a non-standard range (range in UM), e.g. 6v220 R10-20
• A– axial clearance with a non-standard range (range in UM), e.g. 3v220 A20-30



Vibration level

• Normal vibration level of rolling bearings (not designated) , e.g. 6203
• C6 - reduced vibration level of rolling bearings, e.g. 6306 C6
• C06 - reduced vibration level of rolling bearings lower than C6, e.g. 6205 C06
• C66 - reduced vibration level of rolling bearings lower than C06, e.g. 6205 C66



Increased operation safety

• C7, C8, C9- bearings with increased operation safety designed primarily for the aircraft industry, e.g. 16008 C8



Symbol combination

Symbols for tolerance level, bearing clearance, vibration level and operation safety are combined while the C symbol of the second and following special bearing properties is left out, e.g.


• P6 + C3 =P63 e.g. 6v221 P63
• P6 + C8 =P68 e.g. 16002 P68
• C3 + C6 =C36 e.g. 6303-2rs C36
• P5 + C3 + C9 =C539 e.g. 6205MA P539
• P6 + C2NA + C6 =P626NA e.g. NU1038 P626NA