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

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## 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.

#### 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:

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#### Jaw Couplings

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:

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#### 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
Image Part Number Price Diameter
TRM4001_0 $45.00/Meter 12 mm TRM4016_0$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
Image Part Number Price Shaft Diameter Mounting Plate Size Rated Torque Recommended Voltage Gearbox Type Gear Ratio
3332_0 $70.00 12 mm NEMA - 23 46.6 kg·cm 12 V DC Planetary 4 14 : 1 3333_0$72.00 12 mm NEMA - 23 150 kg·cm 12 V DC Planetary 15 310 : 1
3334_0 $74.00 12 mm NEMA - 23 240 kg·cm 12 V DC Planetary 76 4964 : 1 3335_0$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
Image Part Number Price Shaft Diameter Rated Torque Maximum Speed at Rated Voltage
DCM4107_0 $84.00 12 mm 12.2 kg·cm 930 RPM DCM4108_0$86.00 12 mm 37.7 kg·cm 250 RPM
DCM4109_0 $88.00 12 mm 57.1 kg·cm 170 RPM DCM4110_0$95.00 12 mm 102 kg·cm 82 RPM
DCM4111_0 $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 Image Part Number Price Shaft Diameter Rated Torque Rated Voltage Gearbox Type Gear Ratio 3269_3$69.00 12 mm 5.1 kg·cm 24 V DC Planetary 4 14 : 1
3272_2 $72.00 12 mm 51 kg·cm 24 V DC Planetary 46 82125 : 1 3273_2$72.00 12 mm 82.6 kg·cm 24 V DC Planetary 76 4964 : 1
3274_2 $76.00 12 mm 173 kg·cm 24 V DC Planetary 167 601625 : 1 DCM4001_0$80.00 12 mm 10.6 kg·cm 24 V DC Planetary 4.25:1
DCM4002_0 $82.00 12 mm 45 kg·cm 24 V DC Planetary 18:1 DCM4003_0$84.00 12 mm 162.5 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
TRM4317_0 $2.80 12 mm Aluminum 35.7 kg·cm 12000 RPM TRM4318_0$6.85 12 mm Aluminum 611.8 kg·cm 4000 RPM