Best Uxcell Rigid Set Screw Couplings in 2026

Connection Diameter: 6mm to 10mm, Total Length: 22mm /0.87 inch, Outside Diameter : 16mm/ 0.63 inch

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Durable Material: The coupling connector is made of 45# steel( it is better than copper and aluminum alloys ), heat and electroplated process make it sturdiness and insulation, striking shaft more stable and easy for installment and replacement.

Widely use: used in model shaft connection, perfect accessories for RC Model motor.

Size:Inner Diameter: 6mm,Height:12mm,Fixed Hole Screw: M3.

JGY-370 12V 3rpm, Rated voltage-12V DC, No load speed-3rpm,no load current-60MA,Rated speed-2rpm,rated torque-25kg.cm,rated current-0.6A

ALL-METAL GEARS, high-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effectively protect the turbo worm gear box motor body.

D SHAPED OUTPUT SHAFT, using high hardness steel, good toughness, impact resistance, the quality of the bearing and the service life of the turbo worm gear motor are improved, extremely durable

Connection Diameter: 5mm to 5mm, Total Length: 20mm /0.78 inch, Outside Diameter : 12mm/ 0.47 inch

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Provides torque transmision and alignment

Cost effective coupling design

Easily installed where major disassembly would otherwise be required

Type: Flange Shaft Coupling, suitable for model shaft connection, perfect accessories for RC Model motor, etc.

Inner Diameter: 8mm, Cylinder Outer Diameter: 16mm, Cylinder Height: 10mm, Base Diameter: 32mm, Base Height: 3mm, Fastening Screw Hole: M4, Base Fixing Screw Hole: M4

Metal: Fine plating metal, hardened by heat treatment, and then electroplated. Durable and insulation, make your shaft more stable, easy to install and replace.

Inner Diameter: 8mm/0.31 inch, Total Height: 13mm/0.51 inch, Cylinder Outer Diameter: 16mm/0.63 inch, Cylinder Height: 10mm/1.31 inch, Base Diameter: 32mm/1.26 inch, Base Height: 3mm/0.12 inch, Mounting Hole Distance: 24mm/0.94 inch,2 x M4 Fastening Screws

Type: Flange Shaft Coupling, suitable for model shaft connection, perfect accessories for RC Model motor, etc.

Material: Aluminum Alloy, hardened by heat treatment, and then electroplated. Durable and insulation, make your shaft more stable, easy to install and replace.

package includes: 4 pcs 5mm Flange Shaft Coupling with 8 Screws, 4 pcs Allen Wrench, 16 stainless steel Screws

Made of 45# steel, hardened, surface plated, durable.

Cylinder Size (IDxODxH): 5x10x10mm, Base Size: 22mm Fastening Screw Hole: M3, Base Fixing Screw Hole: M3

Connection Diameter: 4mm to 6mm, Total Length: 26mm /1.02 inch, Outside Diameter : 12mm/ 0.47 inch

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Suitable for connecting two axis with different diameters, can also be connected with a motor axis, or connecting shafts of different diameters.

Flex capability of the coupler removes stress when shafts are not aligned perfectly.Widely used in hardware,DIY model,robot,3D Printers and the occasion of the mechanical

Size: 25 x 14mm/0.98" x 0.55"(L*Dia)

Connection Bore Diameter: 1/4 inch to 1/4 inch; Total Length: 25mm /0.98 inch, Outside Diameter : 14mm/ 0.55 inch; with M4 Screws

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Connection Diameter: 10mm to 10mm, Total Length: 22mm /0.87 inch, Outside Diameter : 16mm/ 0.63 inch

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Connection Bore Diameter: 7mm to 8mm; Total Length: 25mm /0.98 inch, Outside Diameter : 14mm/ 0.55 inch; with M4 Screws

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

Feature: Screw Type(Coiling Clamping); Main Color: Silver tone

High axial load and torque capacity

Recessed screw head provides an outside surface free of major projection for safety

Feature: Set screw type (Clamping-on); Main Color: Silver tone

The rigid couplings have high axial load and torque capacity

Recessed screw head provides an outside surface free of major projection for safety

Rigid flange couplings are made of high quality metallic steel. It has high hardness and long durability.

Size : Total height 12mm, Base Size: 22mm, Fastening Screw Hole: M3, Base Fixing Screw Hole: M3.

3/4/5/6mm 4 kinds of specifications, to meet the needs of multiple specifications.

Feature: Screw Type(Coiling Clamping); Main Color: Silver tone

High axial load and torque capacity

Recessed screw head provides an outside surface free of major projection for safety

Type: Couplings Shaft, Suitable for connecting two axis with different diameters, can also be connected with a motor axis, or connecting shafts of different diameters.

Model: 5-5mm Couplings Shaft, means: aperture at one end is 5mm, and the other end is 5mm.

High Quality: Made of aluminium alloy material, light, anti-oxidant, and anti-corrosive, delicate CNC cut with outstanding appearance, high precision fine workmanship, long service life.

Connection Bore Diameter: 1/8 inch to 1/8 inch; Total Length: 20mm /0.79 inch, Outside Diameter : 10mm/ 0.39 inch; with M3 Screws

Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.

The rigid Coupling, we provide here, are in the size of: Material: Stainless Steel; Color: Silver; Screws Size: M4*0.7; Bore size: 8mm to 10mm/0.24inch to 0.24inch; Total Size: 22mm x 16mm/0.87inch x 0.63inch(L*D)

The shaft coupler connector is mainly used to connect the shaft of the motor and the Fully Threaded Rod to ensure the normal operation of the machine. Mainly used for 3D printers, DIY model cars, model boats, model Airplane.

NOTE: The rigid type basically does not allow eccentricity, and it must be fully adjusted during use.

APPLICATION: Widely used in blowers,3D printers, DIY robots, CNC machines, stepper motors, etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

SIZE: Connection Diameter: 5-8mm, Total Length: 25mm /0.98 inch, Outside Diameter : 14mm/ 0.55 inch

FEATURE: Single piece set screw clamp design makes it easy to set up the items on the shaft and control the holding capacity of the coupling.

【Specification】Inner Diameter: 5mm/0.19 inch, Total Height: 12mm/0.47 inch, Cylinder Outer Diameter: 10mm/0.39 inch, Cylinder Height: 10mm/0.39 inch, Base Diameter: 22mm/0.87 inch, Base Height: 2mm/0.08 inch, Mounting Hole Distance: 16mm/0.63 inch

【Hard Material】 coupling connector is made by iron plating, hardened by heat treatment, and then electroplated. Heat and electroplated process make it sturdiness and insulation. It is more stable and easier for installment and replacement.

【Function】flange coupler is produced based on International Flange Standard, which can fix one shaft to a plane and install other parts on the shaft easily. Double connection points fasten the coupler tightly.

【Size&Package】Bore Diameter: 1/4 inch to 1/4 inch; Total Length: 25mm/0.98 inch, Outside Diameter: 20mm/0.78 inch

【Excellent Performance】Bore rigid coupling is made of stainless steel to reduce inertia, has high torque with rigidity, low inertia, and excellent sensitivity. No rotation gap and elastic action can make up for symmetrical angular misalignment.

【Durable Steel Material】Shaft coupler connector is oil proof, corrosion-resistant, corrosion-resistant, and does not rust, having a long service life.

APPLICATION: Widely used in blowers,3D printers, DIY robots, CNC machines, stepper motors, etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.

SIZE: Connection Diameter: 8-8mm, Total Length: 25mm /0.98 inch, Outside Diameter : 14mm/ 0.55 inch

FEATURE: Single piece set screw clamp design makes it easy to set up the items on the shaft and control the holding capacity of the coupling.

Two metal hubs joined by a permanently bonded elastomer for a one-piece flexible shear coupling for connecting two shafts together

Accommodates misalignment in small equipment up to 1/32" parallel and 2" angular

High torsional deflection for isolating low frequency vibration