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

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## Jaw Coupling Half 8mm Series 08

ID: 3427_0

This aluminium jaw coupling fits a 8mm shaft and connects to another half coupling with a spider.

Discontinued
Replaced by the TRM4313, a shaft coupler with the same bore but different size.

This jaw type half-coupling can be used to connect a 8mm shaft to another shaft. It is held in place by two set screws, and 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
TRM4000_0 $6.50/Meter 8 mm #### Ball Screws Ball screws provide an easy means of converting rotary motion into precise linear positioning. You can use this shaft coupler to connect a motor shaft to the following ball screws: Product Physical Properties Image Part Number Price Length LMN4100_0$33.30 200 mm
LMN4101_0 $37.00 300 mm LMN4102_0$40.70 400 mm
LMN4103_0 $44.40 500 mm LMN4104_0$46.65 600 mm
LMN4105_0 $53.30 800 mm LMN4106_0$59.20 1 m

#### 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
3325_0 $40.00 8 mm NEMA - 17 18 kg·cm 12 V DC Planetary 5 211 : 1 3326_0$42.00 8 mm NEMA - 17 30 kg·cm 12 V DC Planetary 13 212289 : 1
3327_0 $44.00 8 mm NEMA - 17 30 kg·cm 12 V DC Planetary 26 103121 : 1 3328_0$46.00 8 mm NEMA - 17 48 kg·cm 12 V DC Planetary 50 43974913 : 1
3329_0 $48.00 8 mm NEMA - 17 48 kg·cm 12 V DC Planetary 99 10442057 : 1 #### 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 DCM4101_0$72.00 8 mm 5.6 kg·cm 810 RPM
DCM4102_0 $74.00 8 mm 15.3 kg·cm 260 RPM DCM4103_0$76.00 8 mm 24.5 kg·cm 166 RPM
DCM4104_0 $80.00 8 mm 51 kg·cm 70 RPM DCM4106_0$42.00 8 mm 2.9 kg·cm 4000 RPM
DCM4112_0 $65.00 8 mm 5.7 kg·cm 4000 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 3265E_0$68.00 8 mm 540 g·cm 12 V DC Planetary 3 1217 : 1
3265_0 $38.00 8 mm 540 g·cm 12 V DC Planetary 3 1217 : 1 3266E_0$72.00 8 mm 1.9 kg·cm 12 V DC Planetary 13 212289 : 1
3266_0 $42.00 8 mm 1.9 kg·cm 12 V DC Planetary 13 212289 : 1 3266_1$42.00 8 mm 1.9 kg·cm 12 V DC Planetary 13 212289 : 1
3267_0 $43.00 8 mm 6.6 kg·cm 12 V DC Planetary 50 801895 : 1 3267_1$43.00 8 mm 6.6 kg·cm 12 V DC Planetary 50 801895 : 1
3268_1 $43.00 8 mm 17.3 kg·cm 12 V DC Planetary 139 1841221 : 1 DCM4000_0$40.00 8 mm 2.5 kg·cm 24 V DC

#### Product Specifications

Physical Properties
Manufacturer Part Number CL8-25 8mm
Material Aluminium
Coupling Rated Torque 60.7 kg·cm
Coupling Rated Speed 16000 RPM
Shaft Angularity Tolerance
Shaft Eccentricity Tolerance 20 μm
Inner Diameter 8 mm
3423_0 $7.50 8 mm Aluminium 4.1 kg·cm 10000 RPM 100 N·m/rad TRM4313_0$2.80 8 mm Aluminum 35.7 kg·cm 12000 RPM