Claw and servo couplings

BJ-Gear's claw and servo couplings, with elastomer inserts, perfectly align for high-torque tasks (0.5-25,000 Nm). They offer precision, vibration damping, and thermal stability, optimizing your drive train.
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  • Material Polyurethane
  • Element nominal torque (Nm) 17
  • Element max. torque (Nm) 34
  • Coupling size 19
€4.29
excl. VAT
  • Material Polyurethane
  • Element nominal torque (Nm) 2400
  • Element max. torque (Nm) 4800
  • Coupling size 90
€105.90
excl. VAT
  • Material Polyurethane
  • Element nominal torque (Nm) 625
  • Element max. torque (Nm) 1250
  • Coupling size 65
€47.35
excl. VAT
  • Material Polyurethane
  • Element nominal torque (Nm) 160
  • Element max. torque (Nm) 320
  • Coupling size 28
€6.33
excl. VAT
  • Material Aluminium and polyurethane
  • Length (mm) 78
  • Max. moment (Nm) 60
  • Coupling size 24
  • Outer diameter (mm) Ø55
  • Bore D1 Ø20mm H7 with keyway
  • Bore D2 Ø20mm H7 with keyway
  • Product type Servo insert coupling
€125.33
excl. VAT
  • Material Aluminium and polyurethane
  • Length (mm) 90
  • Max. moment (Nm) 124
  • Coupling size 28
  • Outer diameter (mm) Ø65
  • Bore D1 Ø25mm H7 with keyway
  • Bore D2 Ø28mm H7 with keyway
  • Product type Servo insert coupling
€146.38
excl. VAT
  • Material Aluminium, steel and polyurethane
  • Length (mm) 76
  • Max. moment (Nm) 160
  • Coupling size 28
  • Outer diameter (mm) Ø65
  • Bore D1 Ø22mm H7
  • Bore D2 Ø25mm H7
  • Product type Servo insert coupling
€163.80
excl. VAT
  • Material Aluminium, steel and polyurethane
  • Length (mm) 40
  • Max. moment (Nm) 21
  • Coupling size 19
  • Outer diameter (mm) Ø40
  • Bore D1 Ø19mm H7
  • Bore D2 Ø19mm H7
  • Product type Servo insert coupling
€110.59
excl. VAT
  • Material Stainless steel and polyurethane
  • Length (mm) 90
  • Max. moment (Nm) 124
  • Coupling size 28
  • Outer diameter (mm) Ø65
  • Bore D1 Ø25mm H7 with keyway
  • Bore D2 Ø30mm H7 with keyway
  • Product type Servo insert coupling
€146.38
excl. VAT
  • Material Aluminium and polyurethane
  • Length (mm) 90
  • Max. moment (Nm) 123
  • Coupling size 28
  • Outer diameter (mm) Ø65
  • Bore D1 Ø24mm H7 with keyway
  • Bore D2 Ø25mm H7 with keyway
  • Product type Servo insert coupling
€146.38
excl. VAT

Understanding claw and servo couplings: 

If you need to connect two machines and make them work well, you have to pick the right coupling. A coupling is a device that joins two shafts and transfers power from one to the other. Claw couplings are a type of coupling that can handle a lot of power and adjust to different positions. They are especially good for applications that need precise alignment and high torque. Torque is the force that makes something rotate. In this article, we will explain why claw couplings might be the best option for you.

 

What are claw couplings? 

A claw coupling is made of two parts that fit together with a rubber piece in between. It can transfer force from one shaft to another with little or no gap, because the parts are locked with a key. The rubber piece also helps to adjust for different positions and angles of the shafts. This way, the whole system works better and your machines run smoother. You can choose different sizes and hardness of the rubber piece depending on how much force you need to transfer.

 

Why choose claw couplings?

  • Fixing alignment problems: Misaligned machine parts can cause damage and noise. Claw couplings can adjust to different kinds of misalignment and make the machine run smoother and last longer.
  • Reducing vibrations: Vibrations can be harmful for the machine, especially if they match its natural frequency. Claw couplings can absorb some of the vibrations and protect the machine from breaking down or wearing out faster.
  • Stiff and stable: Claw couplings are flexible enough to handle some movement, but stiff enough to keep the machine efficient even when the temperature changes.
  • Low backlash: Backlash is the gap between the parts that are supposed to be connected. If there is too much backlash, the machine can lose accuracy and precision. Claw couplings have a special design that minimizes backlash and keeps the machine on point.

 

When considering elastic couplings, R+W's elastic jaw couplings and KBK's elastomer couplings are noteworthy for their quality and performance. These brands exemplify the blend of innovation, customer-focused design, and environmental consciousness, aligning with BJ-Gear's ethos of providing tailored, high-quality solutions.