Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	304 Stainless Steel
Coupling Type	Rigid Double-Hole
Shaft Compatibility	Variable Diameter (5mm - 12mm)
Mounting Method	Set Screw Fixation
Surface Finish	Polished
Concentricity	High Precision (
Operating Temperature	-20°C to 150°C
Corrosion Resistance	Excellent
Application	Motor to Shaft Transmission
Package Contents	1x Coupler, 4x Set Screws, 1x Allen Key

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

High precision

The concentricity is impressive. My 3D printer runs much smoother now with less vibration compared to the plastic coupler I replaced.

Anonymous

Mar 17, 2026

Rating: 5/5

Solid and reliable

I needed a rigid coupler that could handle slight misalignments in diameter, and this double-hole design worked perfectly. Very happy with the purchase.

Anonymous

Mar 12, 2026

Rating: 5/5

Perfect fit for my CNC project

The build quality is exceptional. The stainless steel feels very durable, and the set screws held the shafts tightly without any slippage during high-speed operation.

Anonymous

Mar 07, 2026

Rating: 3/5

Good product, slow shipping

The coupler itself is fine and does the job well. However, the shipping took longer than expected. The product quality makes up for it though.

Anonymous

Mar 03, 2026

Rating: 4/5

Great value, minor finish issue

Works exactly as described for connecting my motor to the lead screw. There was a tiny scratch on the side, but it doesn't affect performance at all.

Anonymous

Mar 03, 2026

Rating: 5/5

Exactly what I needed

Sturdy construction and easy to install. The included Allen key was a nice touch. Highly recommend for anyone building custom machinery.

5 FAQ

Q: Can this be used to connect a 6mm shaft to an 8mm shaft?

A: Yes, this variable transmission adapter is designed specifically to connect shafts of different diameters within the 5mm to 12mm range.

Q: Are the set screws made of steel or brass?

A: The included set screws are made of hardened alloy steel to ensure a secure grip on the shafts without stripping.

Q: Is this suitable for outdoor applications?

A: Yes, since it is made from 304 Stainless Steel, it offers excellent corrosion resistance and is suitable for most outdoor environments.

Q: Does this allow for any angular misalignment?

A: This is a rigid coupler, so it does not accommodate angular misalignment. It is best used when the motor and load shafts are precisely aligned.

Q: What is the maximum torque this coupler can handle?

A: For standard 304 stainless steel models of this size, the maximum static torque is approximately 15 Nm. Please ensure your motor output stays within safe limits for your specific shaft diameter.

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