Coupling

Diaphragm Coupling DKD-CE DKD-CR DKS-CE DKS-CRSeries

Motion components for high-load, high-precision applications in automation, medical, and inspection equipment—from selection through volume delivery.

Shaft Diameter

—

Lead

—

Accuracy Grade

—

Delivery

—

Request a Quote Out of Stock

Product Overview

Suzhou Skoller Automation Equipment Co., Ltd. supplies ball screws, trapezoidal screws, and related motion components for precision applications, with standard catalog and custom options for automation, inspection, and medical equipment.

Model

Diaphragm Coupling DKD-CE DKD-CR DKS-CE DKS-CRSeries

Brand

SKL / WKT

Applications

High-precision linear motion

Services

Selection, machining, delivery, and after-sales support

Technical Specifications

COUPLING

Coupling

SCREWTECH Automation

Covers six major types—jaw, diaphragm, bellows, Oldham, slit, and rigid—with 20+ series, outer diameters 14–144 mm, rated torque 0.5–1520 N·m, and max speed up to 39,000 rpm, meeting power-transmission needs from micro-precision to heavy-duty.

Core Features

ZERO BACKLASH

Zero Rotational Backlash · Precision Transmission

Nearly all series—jaw, diaphragm, bellows—feature zero-backlash design, ensuring loss-free precision power transmission between servo motors and screws.

WIDE RANGE

Six Types, 20+ Series · Full Coverage

From 14 mm micro slit couplings to 144 mm heavy-duty shrink-disc diaphragm couplings, rated torque 0.5–1520 N·m—a one-stop solution for all connection needs.

HIGH SPEED

Up to 39,000 rpm · Low Inertia

Rigid couplings reach up to 39,000 rpm, bellows up to 18,000 rpm. Low-inertia design ensures highly responsive, high-speed precision positioning.

MAINTENANCE FREE

Oil-Resistant & Insulated · Maintenance-Free

Jaw polyurethane elastomers are inherently oil-resistant and electrically insulating, rated −30 °C to 100 °C. Diaphragm types reach torsional stiffness up to 125,500 N·m/rad, durable and maintenance-free.

Applications

SERVO

Servo Motor Connection

Precision power transmission between servo motors and ball screws / linear guides

ENCODER

Encoder Connection

Bellows/rigid couplings with ultra-low inertia ensure encoder signal accuracy

CNC

CNC Machine Tools

Spindle and feed-system connections; diaphragm type's high rigidity absorbs cutting vibration

ROBOTICS

Industrial Robots

Precision drive for each axis; the compact slit type fits joint spaces

Why Choose SCREWTECH

Diverse Fixing Methods

Clamp screws (high torque), set screws (easy removal), shrink-disc (zero clearance), keyway connection

Aluminum & Stainless Steel

Lightweight aluminum body with stainless steel key parts for added rigidity

Wide Temperature Range (Jaw)

Rated −30 °C to 100 °C; oil-resistant, insulating polyurethane elastomer for harsh conditions

High Torsional Rigidity (Diaphragm)

Torsional rigidity up to 125,500 N·m/rad; single/multi-disc, keyway, and shrink-disc structures

High Speed (Bellows)

Up to 18,000 rpm with low inertia and high sensitivity, ideal for encoder signal transmission

Full Customization

All series support custom sizes with selection technical support