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Z12B Series Keyless Shaft Locking Assemblies Shaft Clamping Elements
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Z12B Series Keyless Shaft Locking Assemblies Shaft Clamping Elements

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Basic Info.
  • Brand Name: HOLK 
  • Product Name: Shaft Locking Assemblies, Keyless Shaft Power Lock, Shaft Clamping Elements, Locking Device 
  • Series: Z12B Series 
  • Inner Diameter d: 70mm - 600mm 
  • Outer Diameter D: 110mm - 695mm 
  • Structure: Outer Ring, Inner Ring, Clamping Screws 
  • Torque Range: 7.15 KN.m - 1240 KN.m 
  • Material: #45 Steel 
  • Features: Long life service 
  • Packaging: Neutral Carton/Plywood Box 
  • Model No.: Z12B 360x455 
  • Place of Origin: Jiangsu  
  • Min.Order: 100 Piece/Pieces
  • Means of Transport: Ocean, Land
Supply Capacity
  • Production Capacity: 20000 pcs/month
  • Packing:Neutral Carton Packaging
  • Delivery Date: 30 days


Shaft Clamping Elements, also known as Keyless Power Locking Assemblies, by means of frictional forces, provide connection of all types of transmission equipment to their respective shafts, enabling transmission of both torque and axial thrust loads. Precision tapered thrust cones within the clamping elements create high pressure between shaft and hub to securely fasten pulleys, sprockets, gears, impellers, propellers etc.

These keyless lock assemblies are shaft-to-hub frictional locking devices that provide easily adjustable and releasable mechanical shrink fit. They offer simple installation, increased shaft strength and high torque transmission capacity.

HOLK Bearing offers a comprehensive range of different types of clamping elements to meet individual needs.


Product Name: Shaft Locking Assemblies, Keyless Shaft Power Lock, Shaft Clamping Elements, Shaft Locking Device, Cone Clamping Elements

Series: Z12B

Material: #45 Steel

Construct: Inner Ring, Outer Ring, Locking Screws/Bolts

Screws/Bolts Property Class: Class 12.9


Photos of Z12 series Shaft Locking Assemblies-Shaft Clamping Elements


Drawing and Technical Parameters of Z12B series Shaft Locking Assemblies-Shaft Clamping Elements


Z12B Series Locking Assemblies - Shaft Clamping Elements - Cone Clamping Elements - Shaft Power Lock 
DimensionScrewRated   LoadPressure on shaftPressure on hubScrew Tightening TorqueWeight
dDL2L1Ld1nAxial  ForceTorquePfPf′MA
F1 M1  N/mm 2N/mm 2N·mkg
mmKNKN·m



70110506070M1082047.15194107832.3
801201025010.252121232.5
901301128012.62071252.7
100145607082M121037218.62051261454.1
1101551037220.51871184.4
1201651140824.51881224.8
1301806579911452033.81971286.3
14019015557391961306.6
1502001555741.81831237.8
1602101659347.51831259.4
1702257892106M141576465.519313323010.7
180235157656918212711.3
190250881021161681577.516310314.6
20026020102010219412415.3
22028596108124M1615106011717411335520.2
24030520141017021214021.8
26032521148019320513823.4
280355110130M2015165023221314169030
30037515165024919813431.2
32040512413615620221035419112548
34042520221037618011951
360455140155177M2220275049618511893069
38047520275052417511373
40049522301060218312276
42051524330069419012780
44053524330072816612381
46055524330076015911885
48057525344083015911988
50059525344086115311591
520615283850100316412495
540635283850104215812098
5606553041301157163125101
5806753041301199158121104
6006953041301240153118108


Great care has been taken to ensure the correctness of the information contained in this publication but no liability can be assumed for any incorrect or incomplete data. Our technical department reserves the right to final interpretation.


When ordering, please advise the d x D (ID x OD, e.g. 320x405) and series (e.g. Z12B).


Our Shaft-Hub Locking Assemblies are Alternatives to (Interchangeable with) the following series

China GBZ1, Z2, Z3, Z4, Z5, Z6, Z7A, Z7B, Z7C, Z8, Z9, Z10, Z11, Z12A, Z12B, Z12C, Z13, Z14, Z15,   Z16, Z17A, Z17B, Z18, Z19A, Z19B, Z20, Z21, Z22 etc.
RINGFEDERRfN 7003, RfN 7004, RfN 7005, RfN 7006, RfN 7007, RfN 7012, RfN 7012.2, RfN 7013.0, RfN 7014, RfN 7015.0, RfN 7015.1, RfN 7061, RfN 7110, RfN 7515, etc.
TSUBAKIKE Series, AS Series, AD-N Series, AE Series, TF Series, RE Series, SL Series, EL Series, EF Series, etc.
CHIARAVALLIRCK11, RCK13, RCK15, RCK16, RCK19, RCK40, RCK45, RCK50, RCK55, RCK70, RCK71, RCK80, RCK95, etc.
Rexnord TollokTLK110, TLK130, TLK131, TLK132, TLK133, TLK139, TLK200, TLK250, TLK250L, TLK300,   TLK400, TLK401, TLK450, TLK451, TLK452, TLK500, TLK601, TLK602, TLK603, etc.
RINGSPANNRLK608, RLK608E, RLK606, RLK603, RLK603 K, RLK603 S, RLK110, RLK110 K, RLK130,   RLK131, RLK132, RLK133, RLK402, RLK404, RLK300, RLK200, RLK350, etc.
BIKON1003, 1006,1012, 4000, 5000, 7000A, 7000B, 8000, etc.
BONFIXCCE1000, CCE2000, CCE3000, CCE4000, CCE4100, CCE4500, CCE4600, CCE4900, CCE8000, CCE9500, etc.
SATIKLGG, KLCC, KLNN, KLDA, KLAA, KLDB, KLAB, KLPP, KLBB, KLHH, KLEE, KLFF, KLMM, etc.
COMPOMACA, B, C, D, ES/DS, EP, SD, F, etc.
VBLOKVK400, VK800B, VK700, VK160, VK700.1, VK130, VK112, etc.
RINGBLOK1060, 1100, 1120, 1710, 1720, 1800, etc.
KANA200, 201, 300, etc.
KTRKTR100, KTR150, KTR200, KTR201, KTR203, KTR206, KTR225, KTR250, KTR400, KTR603, etc.


Besides standard series, our company can also design and produce tailored non-standard shaft-hub locking assemblies as per customers' specific requirements.


Incoporated in 1999, HOLK Bearing leads the way in the design and manufacture of quality Bearing Housings and Bearing Adapter Sleeves/Withdrawal Sleeves, we pride ourselves on an immediate and dedicated response to standard and special bearing housing solutions. 

HOLK's max bearing housing fabrication capability: up to 5 tons/pc


We produce top-notch quality Split Plummer Blocks worth more than US$1,000,000 to a big famous European bearing company every year.

We manufacture premium quality Bearing Adapter Sleeves worth more than US$500,000 to a big famous European bearing company every year.



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Mr. Bruce (Director)
Mobile: 19984747929
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HOLK Bearing Co., Ltd
South-Side Center Rd, West-Side Dazhai River, Xiangshui,, Yancheng, Jiangsu, China (Mainland) / 224600
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