Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Model Series	CPDT / CPDW / DBM
Coupling Type	Double Diaphragm with Screw Clamping
Material	Aluminum Alloy Hub, Stainless Steel Diaphragm
Max Speed	10,000 RPM
Misalignment Compensation	Parallel, Angular, and Axial
Backlash	Zero Backlash
Operating Temperature	-20°C to +80°C
Clamping Method	Double Screw Clamping System
Application	Servo Motors, Stepper Motors, CNC Machinery
Compatibility	Alternative to FA Series Models

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect replacement for our CNC setup

We needed a reliable alternative to the standard FA model for our milling machine. This double diaphragm coupling fits perfectly and handles high speeds without any vibration. The screw clamping is very secure.

Anonymous

Mar 26, 2026

Rating: 5/5

Zero backlash confirmed

Tested this on a high-precision positioning stage. There is absolutely no backlash, which is critical for our application. The diaphragm design absorbs minor misalignments beautifully.

Anonymous

Mar 22, 2026

Rating: 5/5

Smooth operation

Installed on a servo motor driving a conveyor belt. The motion is incredibly smooth, and noise levels have decreased compared to our old couplings. The double diaphragm design really makes a difference.

Anonymous

Mar 11, 2026

Rating: 5/5

Robust and reliable

Been running these couplings in our automated assembly line for three months now. They handle continuous operation at high RPMs without heating up or losing torque transmission. Highly recommended.

Anonymous

Mar 11, 2026

Rating: 4/5

Great value alternative

Works just as well as the more expensive brand name versions we used previously. The clamping force is strong, and the balance seems very good. A solid choice for industrial automation.

Anonymous

Mar 05, 2026

Rating: 4/5

Good quality, precise fit

The build quality is excellent. Aluminum hubs are lightweight yet durable. Installation was straightforward using the double screw mechanism. Only giving 4 stars because the delivery took a bit longer than expected.

5 FAQ

Q: What is the maximum allowable parallel misalignment for the CPDT-20 model?

A: For the CPDT-20 model, the maximum allowable parallel misalignment is typically 0.2mm. Please refer to the specific technical datasheet for your bore size as values can vary slightly by dimension.

Q: Is this suitable for outdoor applications exposed to rain?

A: While the stainless steel diaphragm is corrosion-resistant, the aluminum hubs are not sealed against water ingress. For outdoor or wet environments, we recommend applying a protective coating or selecting a stainless steel hub version if available.

Q: Can I use this to connect a motor shaft to a lead screw directly?

A: Yes, this coupling is designed specifically for connecting motor shafts to lead screws, ball screws, or encoder shafts, provided the bore sizes match your shaft diameters.

Q: How does the double diaphragm compare to a single diaphragm in terms of performance?

A: The double diaphragm design offers superior compensation for parallel misalignment compared to a single diaphragm, while maintaining zero backlash and high torsional rigidity. It is generally preferred for applications where perfect shaft alignment is difficult to achieve.

Q: Does this coupling require any special tools for installation?

A: No special tools are required. A standard hex key (Allen wrench) is sufficient to tighten the double screw clamping system. We recommend using a torque wrench to ensure optimal clamping force.

Explore your interests

Honeywell Fresh Air Filter - ERF150/ERF250/ERF350C0N/ERF150D/250D/350D Replacement Filters

$54.00

Chint Claw Hammer, One-Piece Formed Iron Hammer, Tool Nail Hammer, Mini Household Small Hammer Specialized for Woodworking

$5.00

Aluminum Alloy Diaphragm Coupling High Rigidity High Torque SCPS DBJ SCPW Servo Screw Motor Coupling

$28.80

Mold Support Pins SKD61; Three-stage Support Rods; Two-stage Mold Ejector Pins; Heat-resistant Stepped Push Rods with Head; Secondary Support Pins

$5.80

304 Stainless Steel Split Lock Washer Spring Washer 316/201 Elastic Shim M1.6 M2 M3 M4 M5 M6 M8-M33

$1.20

Flanged Copper Bushing with Washer Bearing Powder Metallurgy Oil-Impregnated Copper Bushing with Shoulder Step Flange Copper Sleeve Inner Diameter 1-30

$0.76

Beech Wood Two-Piece Cleaver Handle Accessories, Household Fixed Guard, Handmade Knife Rivet Handle Replacement, Solid Wood Handle

$3.51

Xingchen Oil-Water Separator Filter AC2010-02D, Automatic Drain Two-Component Unit AC3010-03/AC4010

$8.00

Universal Joint Cross Bearing - Sizes 20x45, 22x55, 20x55

$19.00

Figure-8 Coupling GB Encoder Shaft Connector Polyurethane TPU Flexible Plastic Elastic Shaft Sleeve

$13.00

Heavy-Duty Double Steel Wire Tiger Clamp Galvanized Strong Hose Clamp for Pipes Hoses Water Oil Tubes Stainless Steel Band Clamp

$2.60

European Standard Aluminum Profile T-Slot Nuts, Carbon Steel Square Nuts for Types 20, 30, 40, 45 (M3/M4/M5)

$0.55

Custom Non-standard Parts

$650.00

GA/GB Precision Guide Bushing Inner Small Guide Post Stamping Hardware Mold Wear-Resistant 8 10 12 14 16 18 20 25

$3.20

Aotian Extreme 24-25 BURTON STEP ON GENESIS Men's Dual Highback Step-On Snowboard Bindings

$2,288.50

Cungang Micro Ball Guide Pillar and Sleeve, Precision Micro Ball Bushing Guide Assembly, Bronze Bushing, FA Automation Bearing

$60.00

Jinchao Grade 12.9 Socket Set Screws Pointed Machine Screws Headless Grub Screws M3 M4 M5 M6-M16

$0.92

CNC Lathe 0640 Chuck Saw 4-Cut Non-Quenched Round Through Hole 3-46 Internal Thread M48x1.5 Spindle

$20.00

304 Stainless Steel Extension Spring with S-Hook, Strong Curved Hook, Various Sizes and Lengths, Customizable for Oven Door Pull Springs

$1.00

Micro HK Needle Roller Bearing Assortment, Inner Diameters 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17-40mm

$0.58

In Stock Kaisite Solenoid Valve DG4V-5-2C-FW-H-60H 0C 6C 33C 8C 7C

$820.00

Sliding Bar Socket Extension Bar Power Bar Sliding Bar Large 1/2 Medium 3/8 Small 1/4 Fly Rail Tube Wrench Extension Bar Sliding Rod Tool

$3.25

Rotary Worktable Vertical and Horizontal Dual-Use Indexing Plate High-Precision CNC Milling Machine Rotary Table Indexing Head TS TSL

$2,155.00

Flat Pressure Thrust Ball Bearings 51200 51201 51202 51203 51204 51205 51206

$4.60

M20 National Standard Turnbuckle, Malleable Iron Screw Rigging, Spiral Buckle, Galvanized Flower Lantern Bolt, Utility Pole Wire Rope Tensioner

$10.80

M6 M8 M10 M12 M14 M16 Stainless Steel 304 Round Head Rivets GB867 Knock-in Mushroom Head Solid Sign Rivets

$2.43

Hammer Drill Adapter Chuck: Universal Connector for Rotary Hammers and Hand Drills, Compatible with Round Shank (Two Grooves) and Square Shank (Four Grooves)

$5.04

Precision Ball Guide Pillar and Bushing, Rolling Types 20 22 25 28 32 38 SRP TRP SGP Mold Accessories

$28.00

Wear-Resistant Double-Sided Dustproof Wire Grommet Round Cable Bushing Ring for Chassis Rubber Seal

$20.80

400kg 600kg 800kg High-Power Electric Vacuum Suction Cup, Construction Site Building Glass Handling Vacuum Lifting Machine

$5,664.00

TWSNS Taizhuan Shannais Oil-Water Separator Filter Self-Adjusting Pressure Valve Air Source Treatment Two-Piece Unit Pressure Reducing Valve

$11.00

2.5-inch 3-inch 4-inch 5-inch Heavy-Duty Nylon Caster Wheels, Swivel Wheels with Brakes, Hand Truck Wheels, Directional Wheels, Casters

$1.79

Scaffolding Wheels Factory Direct 6 inch 8 inch Heavy-Duty Swivel Casters with Extended Threaded Rod Brake Height Adjustment

$23.80

Galvanized Spring Lock Washers Open Thickened Spring Washers Screw Washers M4 M5 M6 M8 M10 M12-36

$5.95

Sliding Bar 1 Inch Heavy Duty 1/2 Sliding Bar Socket Extension Bar 1/4 3/8 4 Extended Bar Long Adapter Connector

$9.95

Air Source Processor Two-Piece Unit (BFR2000, BFC2000/3000/4000), Pressure Regulating Oil-Water Separator

$45.00

304 Stainless Steel Cross Countersunk Head Screws, Flat Head Machine Bolts, Assorted Electronic Small Screws M2/M3/M4/M5/M6

$1.10

Composite Washer External Hex Drill Tail Self-Tapping Screws for Color Steel Roofing Tiles, National Standard with Washer

$24.00

Custom Helical Gears for Reducers - Non-Standard Cylindrical Spiral Gears with Left/Right Hand Rotation, Module 1-20, 45-Degree Helix Angle

$10.00

Hammer Nut Hammer Head Cap Furniture Two-in-One Connector Cylinder Hammer Embedded Hex Socket Screw Cap M6 M8

$3.00