This kit features top-grade components suitable for heavy machines, high-speed rapids, and deep cuts. Individual 7A rated Gecko drives are matched perfectly to our 7A motors, and our cabling solution makes for a polished and rugged connection system. The kit features the following:
Package includes:
Package includes:
Torque First and foremost, without a reduction (like that in our belt drive systems), you will lose the mechanical torque advantage these systems provide. As an example, for a motor putting out 300-oz*in of torque, with a 1 inch pitch circle gear, a direct drive system will put out about 37 pounds of force, compared to over 100 pounds with our 3:1 belt drive reduction. Stepper motors do lose torque as they spin faster, so reductions much beyond this are not recommended, but with no reduction much of the motor's usable power is not effectively leveraged. A smaller pitch circle gear can provide higher forces, but gears smaller than our current pinion do not effectively keep two teeth engaged with the rack, leading to backlash and lost motion.
Resolution With a 1 inch pitch circle gear, without a reduction the linear motion per rotation is pi * diameter, or 3.14" per revolution. With typical stepper motors that have 200 steps per revolution, this leads to an effective motion per step of 0.015" (0.4mm), which is quite coarse for CNC applications. While 10x microstepping reduces this to 0.0015", microstepping can't be relied upon for accurate positioning between steps, so a direct drive system will leave visibly "stepped" motion. In contrast, with our 3x reduction, these steps are significantly reduced, and because there is less load on the motor, microstepping is also more effective, leading to smoother, higher resolution, and significantly more accurate motion.
New in: Frequently Asked Questions
The unit is based on our own custom extrusion and our V-Con linear motion system, and has the following features:
The gear rack sticks out just beyond the mounting flange, and is milled on the ends, allowing you to splice together multiple lengths for virtually unlimited travel.
For easy fastening to aluminum extrusion, choose our fastener option below, which includes roll-in t-nuts and M8 x 12mm button head cap screws. These allow you to quickly and securely attach the gear rack to your machine frame.
CAD Files and drawings coming soon.
Price: $70.00
New in: PRO Rack and Pinion Parts
Kit Includes the following:
1 Adjustment Sled
2 V Bearings
1 Tension Adjustment Bracket
1 M8x40mm Hex Head Bolt
1 M8 Jam Nut
1 Lock Washer
2 M6x12mm Bolts
2 M6 x 16mm Bolts
4 M6 Washer
Price: $36.75
New in: PRO Linear Motion Parts
