Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	45# Steel with Stainless Steel Diaphragm
Coupling Type	Clamping Diaphragm
Configuration	Single or Double Diaphragm
Torque Capacity	High Torque Transmission
Keyway Feature	Included with Keyway Slot
Misalignment Compensation	Angular, Parallel, and Axial
Operating Temperature	-20°C to +120°C
Surface Treatment	Black Oxide Finish
Application	Servo Motors and Stepper Motors
Model Series	DBN11 / DBN16 Compatible

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Reliable industrial component

We ordered five of these for our assembly line motors. All arrived in perfect condition and have been running smoothly for a month now. Highly recommended.

Anonymous

Mar 25, 2026

Rating: 4/5

Good value for money

For the price, this is an excellent coupling. It replaced a more expensive brand name part with no loss in performance. Shipping was fast too.

Anonymous

Mar 21, 2026

Rating: 5/5

High torque handling

Using this on a high-torque application and it handles the load without any flex issues. The double diaphragm version provides excellent misalignment compensation.

Anonymous

Mar 21, 2026

Rating: 4/5

Solid build quality

Great steel construction. The diaphragm seems durable. Only giving 4 stars because the installation instructions were a bit vague, but the part itself works well.

Anonymous

Mar 14, 2026

Rating: 5/5

Exactly as described

Fitment was spot on for the DBN16 series. The black oxide finish looks professional and seems resistant to corrosion in our workshop environment.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for my CNC retrofit

The clamping mechanism is very secure and the keyway fits perfectly on my motor shaft. Zero backlash observed after two weeks of heavy use.

5 FAQ

Q: Do you offer bulk discounts for orders over 50 units?

A: Yes, we offer tiered pricing for bulk orders. Please contact our sales team directly for a custom quote.

Q: Can I use this with a shaft that does not have a keyway?

A: While this model includes a keyway, the clamping mechanism can still hold a smooth shaft securely, though we recommend using the keyway for high-torque applications.

Q: Does this coupling come with the screws for the clamping hub?

A: Yes, all necessary clamping screws are included in the package.

Q: Is the diaphragm replaceable if it gets damaged?

A: The diaphragm is integrated into the design for precision balance and is not intended to be replaced separately. If damaged, the entire coupling should be replaced.

Q: What is the maximum RPM rating for the single diaphragm version?

A: The single diaphragm model is rated for up to 10,000 RPM depending on the specific bore size selected.

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

Stainless Steel Cross-Slider Coupling for Eccentric Shafts; Servo and Stepper Motor Screw Cross Coupling with High Torque

$40.00

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