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RATTMMOTOR 3Pcs 6.35mm to 10mm Plum Flexible Shaft Coupling D25L30 6.35x10mm Aluminum Coupler Jaw Spider Shaft 1/4 Inch Servo Stepper Motor Connector for CNC Router Engraver Milling Machine,3D Printer

5.0 (8) Write Review
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$13.99

$ 6 .99 $6.99

In Stock
  • ♞【Product】6.35x10mm-25x30mm flexible plum coupler,inner diameter 6.35mm(1/4") to 10mm (0.39") ,D25 to L30mm.Structure:Jaw / Spider
  • ♞【Advantags】 With high rigidity,high flexibility,vibration absorption,high torque and low inertia,with zero back clearance,easy disassembly and assembly,same rotation clockwise and counterclockwise.
  • ♞【Material】The high-quality material is made of aluminum alloy and polyurethane
  • ♞【Applications】Widely used to connect servo motors, stepper motors, spindle,encoders, screw drives, machine tool platforms, etc. Compatible with Nema23 stepper motor (inner diameter 6.35mm to 10mm)
  • ♞【Package includes】3pcs 6.35x10mm-25x30mm flexible plum couplers


Product Description

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Package included:

  • 3Pcs 6.35x10-25x30mm Plum Flexible aluminum coupling

Features:

  • Aluminum flexible coupler
  • 6.35mm to 10mm ID bore
  • Offset screw for clamping to shaft
  • Designed for light to medium duty
  • No backlash – no maintenance
  • Compatible with Nema17/Nema23 motor
  • Outsize size: 25x30mm OD
  • Mainly used for servo motors, spindle, step motor and so on.
  • Wear resistant ,high hardness and excellent response.
5
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5

Chad A.
August 3, 2025
Well made. Tight fit. Machined well.
Edwin W Clayton
June 22, 2025
These seem well built and a good value for the money.
Nimo
June 10, 2025
For the price I can’t complain about it. It’s machined aluminum and molded hard rubber. Virtually there are no plays between mating.
JDG
May 10, 2025
I used this to replace stepper connections on my CNC for NEMA 23 steppers. The last ones I used were the spiral cut connectors and they broke. The hard duro pad is a good buffer for the load shocks and seems to be working very well.
bluewing365
March 27, 2025
This coupler fit very well and was easy to assemble.
Longtime Customer
January 29, 2025
They lose grip in a few daysa
phillip griffin
January 26, 2025
For the price, these things are awesome! I drilled and tapped mine for a 8/32 set screw. Looking for coupler
thomas stewart
January 7, 2025
Easy to use