High Precision Ground Rack
It is widely applied in CNC machines and automation systems where positioning accuracy, repeatability, and dynamic stability are critical.
Product Overview
High Precision Ground Rack is used in rack-and-pinion transmission systems to convert rotary motion into precise linear movement.
It is widely applied in CNC machines and automation systems where positioning accuracy, repeatability, and dynamic stability are critical.
Technical Specifications
|
Item |
Specification |
|
Material |
High-strength Alloy Steel |
|
Manufacturing Process |
CNC machining + heat treatment + precision grinding |
|
Precision Grade |
DIN 6 / DIN 7 (customizable) |
|
Module Range |
M1 – M12+ |
|
Length Options |
500mm / 1000mm / 2000mm / custom |
|
Tooth Type |
Straight / Helical |
|
Hardness |
HRC 45–60 |
|
Surface Finish |
Precision ground finish |
|
Straightness Tolerance |
≤ 0.02–0.05 mm / m |
|
Pitch Accuracy |
±0.01–0.03 mm / 1000 mm |
|
Application Life |
Long-cycle industrial use |
Key Engineering Advantages
Ultra-Precision CNC Grinding
Every single tooth profile is ground individually on advanced gear-grinding machinery. This guarantees micro-level uniform pitch and stable linear transmission accuracy across the entire length of the rack.
Seamless Alignment for Long-Travel Axes
We specialize in precision-ground ends designed for continuous standard or helical jointing. This allows seamless, multi-rack installations for long travel systems ranging from 5 meters to over 20 meters without any pitch drop-off at the joints.
High Load Capacity & Deep Hardening
Utilizing premium alloy steels combined with precise heat treatment (induction/case hardening), our racks withstand heavy structural loads, continuous 24/7 industrial operations, and high-dynamic stress.
Turnkey Rack & Pinion System Solutions
Ruixin provides fully matched rack and pinion sets. By pre-calculating the center distance and meshing geometry, we optimize backlash control after assembly, minimizing engineering hurdles for machine builders.
Application Industries
Machine Tool Industry: CNC machining centers, gantry milling machines, fiber laser cutting systems, and EDM equipment.
Automation & Robotics: Multi-axis industrial robots, high-speed sorting lines, automated assembly systems, and packaging machinery.
Heavy Industrial Equipment: Large-scale gantry cranes (10m–20m+ travel), steel processing lines, and heavy-duty material handling.
High-Precision Positioning: Semiconductor manufacturing equipment, optical measurement platforms, and aerospace positioning stages.
Advanced Quality Measurement System Includes
Coordinate Measuring Machine (CMM): Full 3D dimensional and geometric tolerance verification.
Tooth Profile Deviation Measurement: Ensures perfect involute geometry.
Full-Length Pitch Error Scanning: Full-stroke laser scanning to map and verify cumulative pitch accuracy.
Rockwell Hardness Testing (HRC): Multi-point validation of the case-hardened depth and core toughness.
Surface Roughness Analysis: Strict Ra value control to ensure smooth meshing with the pinion.
DIN Precision Grade Selection Guide
DIN 7: Optimized for standard automation equipment, basic material handling, and secondary packaging lines.
DIN 6: The industry standard for standard Industrial CNC machinery, standard gantry routing, and automated welding cells.
DIN 5: Engineered for high-end, ultra-precision motion systems (Fiber laser cutting tables, 5-axis machining centers, high-speed robotics).
Material Engineering Options
C45 Steel: Reliable, highly cost-effective performance for standard industrial automation.
40Cr Alloy Steel: Enhanced core tensile strength and superior wear resistance for mid-to-high loads.
42CrMo Steel: Premium choice for heavy-load, high-stress, and high-impact applications.
SCM440 / SCM415: Specialized alloy steel tailored for high-speed, continuous precision motion profiles.
Ground Rack vs Standard Rack
|
Feature |
Ruixin High-Precision Ground Rack |
Standard Industrial Rack |
|
Manufacturing Process |
CNC precision grinding |
Milling / shaving |
|
Precision Level |
High precision grade |
Medium |
|
Backlash |
Ultra-low |
Noticeable |
|
Surface Quality |
Smooth ground finish |
Rough surface |
|
High-Speed Performance |
Excellent |
Limited |
|
Service Life |
Long |
Medium |
|
Application Level |
CNC / automation systems |
General machinery |
Customization & OEM Support
We support full tailor-made engineering requests to streamline your assembly:
End Machining: Customized counterbores, precise bolt-hole configurations, and pinning holes.
Flexible Modules: Complete range from M1 up to M12+.
Material Diversity: Advanced alloy steel, stainless steel (for cleanroom/corrosive environments), or carbon steel.
Surface Finishes: Anti-rust oil protection, black oxide coating, or zinc plating.
Engineering Collaboration: Custom logo laser-engraving, tailored packaging, and technical drawing reviews.
Packaging & Safe Global Logistics
Corrosion Mitigation: Racks are thoroughly coated with heavy-duty industrial anti-corrosion oil.
Moisture Barrier: Securely packed inside vacuum-sealed heavy plastic sleeves.
Structural Integrity: Shipped inside rugged, export-grade reinforced wooden crates.
Shock Protection: Internal dampening materials prevent rack-to-rack contact or shifting during transit.
Flexible Logistics: Door-to-door sea freight, air cargo, or international express (DHL/FedEx/UPS).
Why Choose Ruixin
Precision grinding manufacturing capability
Stable industrial production system
OEM support for machine tool manufacturers
Strict quality inspection process
Competitive factory pricing
Fast quotation response (12–24h)
Export experience for global industrial markets
FAQ
Q: What is the main difference between a ground rack and a milled rack?
A: A ground rack is finished by precision grinding, which provides much lower pitch error, better surface finish, and reduced backlash, making it suitable for CNC and high-precision motion systems.
Q: Can Ruixin ground racks replace German or Japanese brands?
A: Yes, Ruixin ground racks are designed according to international DIN standards and can be used as a cost-optimized alternative in many CNC and automation applications.
Q: How do you control pitch accuracy during production?
A: We use CNC grinding machines combined with full-length inspection systems.
Each rack is measured for cumulative pitch error, tooth profile deviation, and straightness using CMM and precision gauges.
Q: What is your tolerance range for high precision racks?
A: Depending on precision grade:
• DIN 7: standard industrial tolerance
• DIN 6: high precision CNC applications
• DIN 5: ultra-precision systems
Pitch error can be controlled within 0.03–0.05 mm per 1000 mm (depending on specification).
Q: Can you guarantee consistency between batches?
A: Yes. We implement strict batch control systems, including:
• Material traceability
• Heat treatment batch control
• Final inspection before shipment
Q: Do you provide inspection reports with shipment?
A: Yes. Upon request, we can provide:
• Dimensional inspection report
• Hardness test report (HRC)
• Material certification
• CMM measurement data
Q: Can the racks be used in long-stroke gantry systems?
A: Yes. Our modular rack design allows precise jointing for long travel distances, commonly used in gantry CNC machines and large automation systems.
Q: What is your typical lead time for production?
A: Standard lead time is:
• Sample: 7–10 days
• Mass production: 15–30 days depending on quantity and customization
Urgent orders can be arranged based on production schedule.
Call to Action
Looking for a Precision Rack & Pinion Supplier?
Ruixin provides high-precision ground rack systems for global machine tool and automation manufacturers.
Get support for:
• Technical drawing review
• Fast quotation within 12–24 hours
• OEM system customization
• Sample testing support
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