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Servomotor Precision Flexible Shaft Coupling

Manufacturer part: 6853N105

Connect shafts and ball screws to high-speed servomotors and stepper motors—these shaft couplings handle four times more speed than standard servomotor couplings. They’re often found on high-torque motors that frequently start and stop, such as those used with packaging machines, press brakes, and semiconductor manufacturing equipment.With aluminum hubs joined by a flexible fluoroelastomer or nitrile rubber core, these shaft couplings dampen vibration and adjust for misalignment. When machines accelerate and decelerate quickly, these couplings remain stiff to maintain accuracy and repeatability, which prevents equipment from moving out of place. They also resist backlash, meaning all of the turning force from the motor is passed on to the connected shaft. The core resists water, petroleum-based chemicals, and inorganic acids while also insulating bearings, encoders, and other shaft components from stray electric current. Clamping screws provide hold without marring shafts; they’re useful in applications where shafts are frequently assembled and disassembled.

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Technical data

Specifications

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OD
19/32,"
ECCN
EAR99
RoHS
RoHS 3 (2015/863/EU) Compliant
Type
Socket Head Screw
Axial
0.008"
DFARS
Specialty Metals COTS-Exempt
REACH
REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Angular
1.5°
Material
Steel
Parallel
0.006"
Schedule B
401699.6000
Construction
One Piece
Maximum Speed
40,000 rpm
For Shaft Type
Round
Maximum Torque
9 in.-lbs.
Overall Length
29/32,"
Center Material
Fluoroelastomer Rubber
For Motion Type
Forward/Reverse, Start/Stop
Number Included
2
Shaft Mount Type
Clamp On
Country of Origin
Japan
For Shaft Diameter
4mm × 6mm
Shaft Coupling Type
Flexible
For Shaft Misalignment Type
Parallel, Angular, Axial

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