Products for USB Sensing and Control
Products for USB Sensing and Control

Jaw Coupling Half 12mm Series 08 - 4mm keyway

ID: 3428_0

This aluminium jaw coupling fits a 12mm shaft w/ 4mm keyway and connects to another half coupling with a spider.

Discontinued

This jaw type half-coupling can be used to connect a 12mm shaft to another shaft. It is held in place by two set screws and accomodates a 4mm keyway for a more secure grip. It fits together with another CL8-25 series jaw coupling of any shaft size with a hard elastomer spider in between.

Jaw type couplings are ideal for high-torque applications and applications where shafts of two different sizes need to be coupled. This series of couplers are rated for torques as high as 60 kg·cm and speeds of up to 16000 rpm.

If you're having trouble with slipping, you can file a groove into the shaft where the set screws hold it in place. You can also use a Loctite adhesive on the set screws to ensure that they remain in place.

Assembly

This jaw type half-coupling connects to any other half-coupling in the CL8-25 series with a coupling spider pressed in between. The other half and the spider are both sold separately. See the Connection & Compatibility tab for a complete list.

FUNCTIONAL

Jaw Coupling Spider

You'll need a coupling spider to connect this jaw coupling to another. You can find a list of compatible spiders below:

error: syntax error at or near "order"

Jaw Couplings

FUNCTIONAL

Jaw couplings are designed to connect to other jaws in the same series, which gives you the option of coupling two differently sized shafts together. Between the two jaw couplings, a coupling spider is used to hold them in place while still allowing for a small amount of flex. The jaw couplings in the list below will fit together with this coupling:

No matching products found

Rotary Shaft

If you're building a rotary transmission system of any kind, chances are you'll need some rotary shaft. Here's a list of rotary shaft compatible with this shaft coupler:

Product Physical Properties
Part Number Price Diameter
TRM4001_0
12mm Precision Ground Rotary Shaft (w/ keyway)
$45.00/Meter 12 mm
TRM4016_0
12mm Precision Ground Rotary Shaft (no keyway)
$6.50/Meter 12 mm

Stepper Motors

Stepper motors have high torque and precise position control. This shaft coupler can connect to the main shaft of the following stepper motors:

Product Physical Properties Motor Properties Electrical Properties Gearbox Properties
Part Number Price Shaft Diameter Mounting Plate Size Rated Torque Recommended Voltage Gearbox Type Gear Ratio
3332_0
57STH56-2804B - 1.8 Degree - 2.8A Stepper - 4.25:1 Gearbox
$70.00 12 mm NEMA - 23 46.6 kg·cm 24 V DC Planetary 4 14 : 1
3333_0
57STH56-2804B - 1.8 Degree - 2.8A Stepper - 15:1 Gearbox
$72.00 12 mm NEMA - 23 150 kg·cm 24 V DC Planetary 15 310 : 1
3334_0
57STH56-2804B - 1.8 Degree - 2.8A Stepper - 77:1 Gearbox
$74.00 12 mm NEMA - 23 240 kg·cm 24 V DC Planetary 76 4964 : 1
3335_0
86STH65 NEMA-34 Bipolar Gearless Stepper
$60.00 12 mm NEMA - 34 30 kg·cm 30 V DC

Brushless DC Motors

Brushless DC motors combine smooth rotation with accurate position control. This shaft coupler can connect to the following BLDC Motors:

Product Physical Properties Motor Properties
Part Number Price Shaft Diameter Rated Torque Rated Speed
DCM4107_0
57DMWH75 NEMA23 Brushless Motor with 4.25:1 Gearbox
$84.00 12 mm 12.2 kg·cm 930 RPM
DCM4108_0
57DMWH75 NEMA23 Brushless Motor with 15:1 Gearbox
$86.00 12 mm 37.7 kg·cm 250 RPM
DCM4109_0
57DMWH75 NEMA23 Brushless Motor with 23:1 Gearbox
$88.00 12 mm 57.1 kg·cm 170 RPM
DCM4110_0
57DMWH75 NEMA23 Brushless Motor with 47:1 Gearbox
$95.00 12 mm 102 kg·cm 82 RPM
DCM4111_0
57DMWH75 NEMA23 Brushless Motor with 96:1 Gearbox
$98.00 12 mm 214.1 kg·cm 41 RPM

DC Motors

DC motors are the simplest and most common option for rotary motion in many projects. This shaft coupler can connect to the main shaft of the following DC motors:

Product Physical Properties Motor Properties Electrical Properties Gearbox Specifications
Part Number Price Shaft Diameter Rated Torque Rated Voltage Gearbox Type Gear Ratio
3269_3
24V/5.1Kg-cm/588RPM 4.25:1 DC Gear Motor
$69.00 12 mm 4.4 kg·cm 24 V DC Planetary 4 14 : 1
3270_2
24V/14.2Kg-cm/192RPM 13:1 DC Gear Motor
$66.00 12 mm 13.3 kg·cm 24 V DC Planetary 12 2425 : 1
3272_2
24V/50.9Kg-cm/53RPM 47:1 DC Gear Motor
$72.00 12 mm 43.8 kg·cm 24 V DC Planetary 46 82125 : 1
3273_2
24V/82.6Kg-cm/33RPM 76:1 DC Gear Motor
$72.00 12 mm 71.4 kg·cm 24 V DC Planetary 76 4964 : 1
3274_2
24V/173.3Kg-cm/15RPM 168:1 DC Gear Motor
$76.00 12 mm 136.6 kg·cm 24 V DC Planetary 167 601625 : 1
DCM4001_0
24V/10Kg-cm/772RPM/4.25:1 DC Gear Motor
$80.00 12 mm 12.2 kg·cm 24 V DC Planetary 4 14 : 1
DCM4002_0
24V/45Kg-cm/182RPM/18:1 DC Gear Motor
$82.00 12 mm 47 kg·cm 24 V DC Planetary 18 : 1
DCM4003_0
24V/162Kg-cm/50RPM/65:1 DC Gear Motor
$84.00 12 mm 153 kg·cm 24 V DC Planetary 65 : 1

Product Specifications

Physical Properties
Manufacturer Part Number CL8-25 12mm
Material Aluminium
Coupling Rated Torque 60.7 kg·cm
Coupling Rated Speed 16000 RPM
Torsional Stiffness 63 N·m/rad
Shaft Angularity Tolerance
Shaft Eccentricity Tolerance 20 μm
Inner Diameter 12 mm
Screw Thread Size M4
Weight 42 g
Customs Information
Canadian HS Export Code 8483.60.00
American HTS Import Code 8483.60.80.00
Country of Origin CN (China)

More 12mm shaft couplings:

Product Physical Properties
Part Number Price Inner Diameter Material Coupling Rated Torque Coupling Rated Speed Torsional Stiffness
TRM4317_0
Jaw Coupling Half 12mm Series 12
$3.60 12 mm Aluminum 35.7 kg·cm 12000 RPM
TRM4318_0
Jaw Coupling Half 12mm Series 24
$6.85 12 mm Aluminum 611.8 kg·cm 4000 RPM