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© 2005 Bob Campbell Designs
Design by Digital Platinum

Stepper Motors

Our Stepper Motor Family

Our standard stepper motor for CNC router applications would be the large black size 34 motor. It is rated at 640 oz/in.  For lighter duty the smaller size 23 motor is rated at 270 oz/in.

For machine tool applications we recommend the two gray motors. Both have a small box at the rear for the four wire connection. The box is sealed to keep out chips and cutting fluids.

The smaller machine tool motor is rated at 640 oz/in. The larger motor is rated at 1200 oz/in.

The larger motors are new state of the art bipolar 4-wire stepper motors designed and built with the newer high performance technology. The magnets are not the standard Alnico, but are higher flux density rare earth magnets. The power/weight ratio and cogging characteristics are similar to the N series from Pacific Scientific.  The motors are designed for micro stepping.  We recommend Gecko stepper motor drivers for all your stepper motor needs.  www.Geckodrive.com 

We currently have three of the large black motors on a ShopBot conversion.  The motors are running quiet and cool.  The ShopBot customer is very pleased with the motors, Gecko drives and Mach2.  The customer is able to run his Shopbot three times as fast with a better quality of cut.

Initially I will only be shipping the stepper motors to customers here in the states. International customers please contact me for shipping prices.  

For US customers I can ship one motor for $7.50, two or three for $10.00.

NOTE: For international customers, please contact me before ordering any stepper motors. I will need to check the price on shipping.

When ordering more that one motor using PayPal, just figure up the price and add the $10.00 and then click on send money and use my email address.  Bob@campbelldesigns.com 


The price of the Size 23 motors is $60.00.

Operation

Holding torque-Nm (oz/in)
+/- 10%

Rated voltage

Rated current
per phase
(amps DC)

Resistance (Ohms) +/- 10%

Induction (mH)
+/- 20% typical

Motor length
(mm)

Rotor inertia
(g-cm^2)

Weight (kg)

bipolar

1.9 (270)

3.75

2.8

1.34

5.73

80

480

1.0

unipolar

1.35 (190)

2.48

4

0.62

1.43

 

 

 

 

The price of the 640 oz/in black stepper motor is $120.00

The price of the 640 oz/in Machine Tool stepper motors is $145.00

Holding torque
Nm (oz/in)
+/- 10%

Rated voltage

Rated current
per phase
(amps DC)

Resistance (Ohms)
+/- 10%

Induction (mH)
+/- 20% typical

Motor length (mm)

Rotor inertia
(g-cm^2)

Weight (kg)

4.6 (640)

2.3

5.5

0.42

3.5

80

1400

2.3

 

The price of the 1200 oz/in Machine Tool motor is $195.00

Holding torque
Nm (oz/in)
+/- 10%

Rated voltage

Rated current
per phase
(amps DC)

Resistance (Ohms)
+/- 10%

Induction (mH)
+/- 20% typical

Motor length (mm)

Rotor inertia
(g-cm^2)

Weight (kg)

8.7 (1208)

2.7

6.0

0.45

5.1

118

2700

3.8

 

 

"Creative people inspire the rest"


© 2005 Bob Campbell Designs
Last updated on 7/10/05