CNC Machine Spare Gear Box
High-precision 5:1 planetary reduction gearbox designed for NEMA 34 stepper and servo motor axis drives on CNC routers. Features hardened alloy steel helical gears, dual-bearing output shaft, and ≤8 arcmin backlash.
- check_circle Precision planetary gearing: Carburized alloy steel gears provide high torsional rigidity and smooth meshing.
- check_circle 5:1 Standard reduction ratio: Multiplies motor torque by 5x, enabling fast gantry acceleration.
- check_circle Low backlash (≤ 8 arcmin): Virtually eliminates mechanical play and hysteresis during rapid direction reversals.
- check_circle Dual heavy-duty output bearings: Absorbs heavy radial and axial thrust forces produced by helical pinion engagement.
- check_circle Rust-proof stainless steel housing: Corrosion-resistant electroplated casing protects against shop moisture.
- check_circle Lifetime synthetic grease: Permanently sealed lubrication requires zero routine maintenance.
- check_circle Universal NEMA 34 input: Standard 4-hole mounting face fits 14mm motor shafts seamlessly.
Target Applications & Use Cases
Industrial Applications FitMain reduction drive between NEMA 34 motors and helical rack-and-pinion on 1325/1530 tables.
Precision reduction transmission for high-speed laser gantry bridges.
High-torque gear reduction to move heavy water-cooled stone cutting gantries.
Heavy torque multiplication for indexing 4th axis chucks and lathe attachments.
Engineering & Production Benefits
Key Operational AdvantagesInertia matching prevents stepper stalling and servo hunting at rapid positioning feeds.
Smooth tooth handover eliminates backlash chatter and stepping lines on workpieces.
Hardened internal gears and sealed bearing construction survive years in dusty woodshops.
Direct motor-to-gearbox bolting eliminates loose belt pulleys and external brackets.
Spare Part Overview & Technical Description
Precision Planetary Reduction Gearbox for CNC Router Axes
The MSUN precision reduction gearbox (Model MSUN-GB-1325) is an essential mechanical motion transmission unit that bridges high-speed stepper or servo motors to the helical pinion gear driving the gantry along the machine rack. Delivering a standardized 5:1 (or 10:1) mechanical torque multiplication ratio, this planetary gearbox multiplies motor torque while simultaneously reducing the reflected load inertia by the square of the gear ratio (25:1), ensuring rock-solid gantry positioning and stopping accuracy.
Built with a stainless steel and high-tensile alloy housing, the gearbox incorporates carburized and induction-hardened internal planetary gears with micro-ground tooth profiles. This rigid design maintains low backlash (≤ 8 arcmin), preventing mechanical play that causes backlash chatter, cutter stepping lines, or dimensional errors during directional reversals. Heavy dual deep-groove ball bearings on the output shaft easily absorb the significant radial and axial thrust loads generated by helical rack and pinion engagement.
Mechanical Architecture & Installation:
- Standard NEMA 34 Input Flange: Clamps securely onto any 14mm motor shaft using integrated balanced clamping collar.
- Torque Multiplication: 5:1 reduction increases motor output torque by 500% for rapid gantry accelerations.
- Sealed Lubrication: Factory-packed with synthetic high-pressure grease; zero oil changes or topping up needed.
- Dual Heavy Output Bearings: Preloaded bearing set absorbs radial pinion thrust forces up to 2500N.
Full Specifications Sheet
| Specification | Parameter / Value |
|---|---|
| Spare Type | Mechanical Part |
| Material | Stainless Steel |
| Machine Type | CNC Router |
| Brand Compatibility | Msun |
| Part Category | Gear box |
| Usage Area | Axis Motion |
| Condition | New |
| Country of Origin | Made in India |
| Usage/Application | CNC Machine |
| Rust Proof | Yes |
| Packaging Type | Box |
| Brand | MSUN |
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