Motion duty
Specify speed, acceleration, duty cycle and direction changes for the CNC machine tools axis.
APPLICATION SOLUTION
CNC Machine Tool Rack & Pinion Drives
For CNC machine tools, a rack drive should be selected from the machine duty and installation interface. We focus the RFQ on positioning behavior, backlash, stiffness and repeatable installation rather than applying one catalogue assumption to every axis.
Cnc Machine ToolsDrawing ReviewCustom Rack Sets
Where the rack drive fits
Typical uses include long X/Y-axis feeds, gantry mills and machining systems. The rack supplies the fixed linear tooth path while the driven pinion travels along it, or the arrangement can be reversed depending on the machine architecture.
The decisions that define this application
Moving load
Provide moving mass, feed force or torque at the drive where available.
Positioning need
State the required positioning, repeatability or drawing quality rather than a vague “high precision” request.
Installation
Show rack datum, section joints, mounting holes, pinion support and adjustment access.
Environment
Describe chips, dust, coolant, outdoor exposure, temperature or other contamination.
Service plan
Confirm lubrication method, inspection access and expected maintenance interval.
Product family starting point
Ground precision and helical rack options are common starting points, but the final choice depends on axis duty and the target tolerance.
The rack and mating pinion must still share the same pitch system, pressure angle and other tooth geometry. Final material, treatment, finish and quality are confirmed for the ordered drawing.
Application RFQ table
| Specification | Project / ordering requirement |
|---|---|
| Machine / axis | CNC machine tools |
| Travel and rack length | Confirm stroke, individual section length and number of sections. |
| Pitch system | Module, DP or CP from design or existing component. |
| Pressure angle / helix | Confirm from drawing; helix hand/angle where applicable. |
| Pinion | Tooth count, bore/shaft/hub interface and gearbox arrangement. |
| Duty | Moving mass, linear speed, acceleration, cycles and load/force. |
| Accuracy | Drawing tolerance, positioning/repeatability target or required quality class. |
| Environment | Contamination, lubrication, temperature and corrosion conditions. |
| Quantity | Prototype and expected batch/program volume. |
Alignment and joining
Multi-section racks on CNC machine tools equipment need a controlled mounting reference. The joint should not become an abrupt pitch error, and pinion engagement must remain consistent along the travel.
What to inspect before drawing release
Tooth match
Rack and pinion geometry agree.
Datum plan
Mounting face and hole pattern are fully dimensioned.
Join plan
Segment ends and joining method are defined.
Drive load
The pinion/gearbox load path is understood.
Lubrication
Access and lubricant delivery are practical.
Inspection
Required dimensional and tooth checks are stated.
Commercial planning
Prototype and small-quantity projects can be discussed. For program work, include estimated annual demand or batch quantity so process and packaging can be planned appropriately.
MOQFlexible by product type and total order value.
SamplesNew customers may request 1-5 pieces when the part and process are suitable.
Mixed ordersDifferent rack, pinion or related models can be combined when the total order value is around USD 1,500 or above.
Small ordersOrders from 1-2 pieces can be discussed, normally with a higher unit cost.
DeliveryStandard parts: 10-25 working days. Custom components: 20-45 working days. Project equipment: 45-120 working days.
Trade termsEXW, FOB, CIF and DAP are commonly supported. FCA, CFR, CPT, CIP and DDP can be discussed case by case.
Frequently asked questions
Can an existing rack be replaced from measurements?
Measurements help, but a drawing or complete tooth data is strongly preferred. A worn rack can be a poor master for exact tooth geometry.
Can the matching pinion be included?
Yes. Quote the pinion together with the rack when you want one controlled tooth-system interface.
Do you recommend a quality class without duty data?
No. The target accuracy should be tied to the machine requirement and drawing, then confirmed for the ordered configuration.
RFQ
Send the CNC machine tools layout and rack/pinion drawing.
Include the rack type, pitch system, pressure angle, required length, mating pinion data, target accuracy or tolerance, operating duty and quantity. A drawing is the fastest way to remove ambiguity.
MOQFlexible by product type and total order value.
SamplesNew customers may request 1-5 pieces when the part and process are suitable.
Mixed ordersDifferent rack, pinion or related models can be combined when the total order value is around USD 1,500 or above.
Small ordersOrders from 1-2 pieces can be discussed, normally with a higher unit cost.
DeliveryStandard parts: 10-25 working days. Custom components: 20-45 working days. Project equipment: 45-120 working days.
Trade termsEXW, FOB, CIF and DAP are commonly supported. FCA, CFR, CPT, CIP and DDP can be discussed case by case.
