KAPP NILES KX 500P
Key Specifications
axes
max gear outside diameter
max gear module
max face width
max helix angle
max workpiece weight
Overview
The KAPP NILES KX 500P is a large-capacity CNC gear profile grinding machine for external gears up to 500 mm (19.7 in) outside diameter, built specifically for large gear production with integrated automation. The 'P' designation signals a production-optimized configuration with a comprehensive automation package built in from the machine architecture, rather than as an afterthought add-on.
The KX 500P targets heavy-duty industrial applications: large automotive differential and ring gears, wind turbine planetary gears, marine gearbox gears, mining equipment drives, and large industrial reducer components where gear outside diameters reach the limits of conventional gear grinding machines. Maximum module is 12, covering the full range of large industrial gear manufacturing.
The machine uses continuous generating gear grinding with a dressable CBN or corundum worm wheel up to 380 mm (14.96 in) diameter. The grinding worm engages the gear workpiece with full six-axis synchronized CNC motion under KN grind software control. The integrated CNC dressing unit maintains worm profile throughout production, and the on-machine gear probing system provides closed-loop feedback for automatic grinding compensation.
The automation package on the KX 500P includes an integrated gantry loader or ring loader system capable of handling workpieces up to 300 kg (661 lb) unassisted, enabling full lights-out production runs for large gear batches. The pallet changer system allows batch queuing of multiple part sizes within the machine's envelope.
KX 500P is built on a reinforced polymer concrete base with a closed-frame machine structure for maximum stiffness under the heavy grinding forces generated at module 12. Linear axis drives use high-force linear motors or precision ballscrews with direct-drive workpiece spindle.
New KX 500P machines are typically priced in the $900,000-$1,400,000 range depending on automation configuration.
Full Specifications
| Parameter | Value |
|---|---|
| Axes | 6 (X, Y, Z linear + A workpiece rotation, B grinding worm, C dressing) |
| Max Gear Outside Diameter | 500 mm (19.7 in) |
| Max Gear Module | 12 mm |
| Max Face Width | 450 mm (17.7 in) |
| Max Helix Angle | ±45 degrees |
| Max Workpiece Weight | 300 kg (661 lb) |
| Grinding Process | Continuous generating grinding (worm grinding wheel) |
| Grinding Wheel Diameter | Up to 380 mm (14.96 in) |
| Workpiece Spindle | Direct-drive, backlash-free |
| Dressing | Integrated CNC dressing spindle with diamond gear |
| Automation | Integrated gantry loader, pallet changer for 300 kg workpieces |
| Machine Bed | Reinforced polymer concrete |
| Machine Dimensions | 4,500 x 2,800 x 2,600 mm (177.2 x 110.2 x 102.4 in) |
| CNC Control | KN grind on Siemens Sinumerik 840D sl |
Strengths & Limitations
Strengths
- 500 mm OD and module 12 capacity covers large wind turbine planet gears, marine drive components, and large industrial reducer gears that smaller generating grinders cannot reach
- Integrated production automation with 300 kg gantry loader enables fully unmanned large gear grinding — essential for cost-competitive large gear production
- Pallet changer system allows batch queuing of different part sizes and types within the machine envelope, maximizing spindle utilization across production shifts
- On-machine probing with closed-loop grinding compensation maintains tooth accuracy across long production runs despite wheel wear and thermal variation
- Reinforced polymer concrete base and closed-frame structure handle the high grinding forces at module 12 while maintaining the precision needed for DIN 4-5 quality
- KN grind topology programming supports full profile and lead modifications for noise-optimized large gears, including wind turbine gear silence requirements
Limitations
- Price of $900,000-$1,400,000 new is among the highest in gear grinding — application and volume justification must be rigorous before purchase
- Machine footprint of 4,500 x 2,800 mm and 300 kg workpiece handling requirements demand significant floor space and facility infrastructure
- Generating grinding at module 12 requires highly skilled process engineers and technicians — this is not a machine for shops new to gear grinding
- Grinding worms for module 12 gears are expensive consumables; cost-per-gear analysis must include worm replacement at realistic dressing intervals
- Long cycle times for large module gears mean the machine's ROI depends on consistent throughput of large parts — idle time is costly at this capital level
Best For
Frequently Asked Questions
01
The KX 500P is the production-optimized version of KAPP NILES' 500 mm gear grinding platform. The 'P' designation indicates a standard integrated automation package — the gantry loader and pallet changer are part of the machine configuration rather than optional add-ons. The base KX 500 configuration may be available without automation for applications where manual loading is preferred, but the KX 500P is the production standard for high-volume large gear manufacturing.
02
The KX 500P can grind ring gears and planet gears within its 500 mm OD envelope, covering many wind turbine planetary gearset components. Large main shaft ring gears for multi-MW turbines may exceed 500 mm and require the KX 500 or larger KAPP NILES platforms. KAPP NILES is a recognized supplier to the wind energy sector, and their applications team can evaluate specific gear designs against machine capability.
03
At module 12, the KX 500P consistently achieves DIN 3963 quality grades 5-6 (AGMA 10-11) under production conditions, with grades 4-5 achievable with optimized process parameters and in-process gauging. Large-module gears are inherently more challenging to grind to high accuracy due to the greater grinding wheel engagement and higher cutting forces, but the KX 500P's rigid structure and closed-loop probing make high-quality large-module grinding achievable in production.
04
New KAPP NILES KX 500P machines are typically priced between $900,000 and $1,400,000 depending on the automation configuration, measuring system, and software options included. The integrated automation distinguishes the KX 500P from simpler 500 mm gear grinders and is reflected in the price. Contact KAPP NILES or their North American representative for a quotation specific to your gear range and production requirements.
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