Standard Internal Grinding Spindles
Internal Grinding Spindles– IG-25 & IG-40 Models
Why Choose Our Internal Grinding Spindles?
- High-Speed Capability: Supports 6,000 – 40,000 RPM for fine surface finishes.
- Quick-Mount Design: Enables fast, tool-free installation into existing machines.
- Factory Balanced: Each spindle is balanced to G2.5 for smooth, vibration-free operation.
- Compact & Durable: Robust ceramic bearings extend life even under high-load and coolant exposure.
- Customizable Interface: Compatible with standard ID grinder setups.
Models & Technical Specifications
Model | Max RPM | Power (kW) | Mount Ø (mm) | Cooling Type |
IG-25 | 40,000 | 3.5 | 25 | Oil Mist |
IG-40 | 18,000 | 5.0 | 40 | Air-Oil |
Both models are designed for high-precision internal grinding and come pre-configured for plug-and-play operation with most CNC and manual grinding setups
Quick-Mount, Factory-Balanced Advantage
Unlike traditional spindles that often demand hours of setup, alignment, and re-balancing before they can be used, our internal grinding spindles are engineered for instant readiness. Each spindle is shipped in a factory-balanced condition, ensuring precision from the very first run. With a quick-mount design, installation takes just a few minutes — minimizing operator effort and eliminating unnecessary machine downtime.
Even at full operating speeds, our spindles consistently maintain less than 1 micron runout, a benchmark of ultra-precision that directly enhances grinding accuracy, surface finish, and tool life. This not only increases productivity but also improves machine utilization, allowing manufacturers to take on more jobs with confidence. By combining speed, stability, and reliability, our quick-mount spindles provide a competitive edge for any high-precision grinding application.
Common Applications
Our internal grinding spindles are designed to deliver precision, reliability, and consistency across a wide range of industries and applications.
- Automotive – Used extensively for valve seat, injector bore, and gear component grinding, ensuring tight tolerances that directly impact engine efficiency and performance.
- Aerospace – Ideal for hydraulic sleeve, turbine hub, and internal casing grinding, where superior accuracy and surface finish are essential for safety and reliability.
- Medical – Supports the production of surgical tools, orthopedic implants, and precision bores in instruments, enabling repeatable results in critical healthcare applications.
- Bearing Manufacturing – Ensures raceways, cages, and inner diameters are ground with micron-level accuracy, extending bearing life and reducing friction losses.
- Tool Room & R&D – Perfect for die finishing, mold cavities, and prototype machining, allowing engineers to achieve consistent results in both small-batch and experimental projects.
With versatility across industries, our spindles help manufacturers achieve unmatched accuracy, repeatability, and efficiency in every operation.
Ordering, Support & Customization
Every application is unique, and we understand that standard solutions may not always meet your exact requirements. That’s why we provide custom spindle design, modification, and mounting options tailored to your machine and process. Whether you need a specific mounting interface, a custom RPM range, or a specialized bore size, our engineering team works closely with you to deliver a spindle that fits seamlessly into your system.
To ensure complete confidence in your purchase, each spindle is supplied with:
- A 12-month warranty for long-term reliability.
- A comprehensive pre-shipment test report, validating runout, vibration levels, and speed performance.
- 48-hour express repair support, minimizing downtime in the rare event of a fault.
- CAD drawings and detailed installation guides, making integration simple and hassle-free.
Contact our technical experts today to discuss your application, request a quote, or schedule a one-on-one consultation to explore the right spindle solution for your needs.