670mm Helical Rack
Precision Module 1.25 ground helical gear rack (670mm length) with induction-hardened teeth (HRC 45-50), pre-machined mounting bores, and black oxide anti-corrosion finish. Delivers high-load, low-backlash linear motion.
- check_circle Module 1.25 helical tooth geometry: 19°31'42" right-hand helix angle ensures continuous, smooth tooth engagement.
- check_circle Induction-hardened teeth (HRC 45-50): Resists pitting and tooth deformation under high gantry acceleration.
- check_circle Heavy load carrying capacity: Multi-tooth contact ratio supports gantry traverse speeds exceeding 35 m/min.
- check_circle Counterbored mounting bores: Standardized hole spacing allows rigid bolting directly to machined gantry steel tubes.
- check_circle Precision end-machined teeth: Allows seamless end-to-end butting for 2.5m, 3m, or longer bed axes.
- check_circle Black oxide anti-rust coating: Chemical surface treatment prevents corrosion in humid workshop environments.
- check_circle Dual material options: Available in C45 carbon steel and stainless steel (SS) variants.
Target Applications & Use Cases
Industrial Applications FitPrimary linear drive for X and Y axes on 1325 and 1530 flatbed routers.
High-velocity positioning drive for laser cutting bridges over long beds.
Durable mechanical drive immune to slag, sparks, and high thermal radiation.
Heavy-load factory pick-and-place gantry tracks and material handling carriages.
Engineering & Production Benefits
Key Operational AdvantagesHelical engagement eliminates the harsh metallic clanking of straight spur gears.
Gradual tooth handover eliminates mechanical ripple lines on machined workpiece sides.
Replace individual 670mm damaged segments rather than discarding an entire rail.
Positive mechanical gear mesh eliminates timing belt stretch, slipping, and belt wear.
Spare Part Overview & Technical Description
Module 1.25 Precision Ground Helical Rack & Pinion Drive
This 670mm precision helical rack (Module 1.25) is the core linear motion drive transmission component utilized on modern high-speed CNC routers, laser cutters, and automated gantry bridges. Unlike straight-tooth spur racks where contact occurs abruptly along the entire tooth width, helical racks engage gradually along an angled 19°31'42" pitch line. This angular contact provides a dramatically higher tooth overlap ratio, distributing heavy gantry inertial forces across multiple meshing teeth simultaneously.
Manufactured from high-grade medium carbon steel (C45/SS) and finished with hot rolling, precision tooth grinding, and high-frequency induction hardening (HRC 45–50), this rack exhibits high resistance to pitting, surface wear, and tooth shear. Each 670mm section includes precision end-machined joint faces and standardized counterbored bolt holes, enabling seamless end-to-end butting along extended machine beds (e.g. 2500mm or 3000mm strokes) without pitch discontinuities or stepping jerks.
Mounting & Alignment Guidelines:
- Modular Splicing: Use a reverse companion rack section clamped across the joint seam to ensure perfect tooth pitch continuation before torquing mounting bolts.
- Lubrication Protocol: Keep teeth lubricated with high-adhesion lithium grease or automated felt-gear pinion lubricator.
- Backlash Adjustment: Mount reduction gearbox on an eccentric pivot or slotted plate to dial in 0.03mm-0.05mm running backlash.
- Surface Hardening: Induction-hardened tooth flanks provide extended operational life under continuous heavy gantry reversing cycles.
Full Specifications Sheet
| Specification | Parameter / Value |
|---|---|
| Minimum Order Quantity | 1 Piece |
| Module | 1.25 |
| Tooth Type | Straight |
| Length | 670mm |
| Material | Mild Steel |
| Surface Finishing | Halical |
| Color | Black |
| Usage/Application | CNC Machine |
| Country of Origin | Made in India |
Customer Reviews & Operational Ratings
Genuine evaluations from manufacturing plants, fabrication units, and machine operators across India.
Based on 1 verified client review.
“Genuine OEM standard spare part. Perfect replacement with zero downtime.”