Internal (Bore) Grinding
Internal (Bore) Grinding
| OD | T | H | Grit | Grain | Hardness | Structure | Speed |
|---|---|---|---|---|---|---|---|
| 6mm–40mm | 16mm | A | F46 | H | 4 | 33m/s | |
| 32mm–50mm | WA | F54 | J | 5 | 35m/s | ||
| 6mm–63mm | 20mm | AA | F60 | K | 6 | 35m/s | |
| 8mm–50mm | 38A | F80 | L | 7 | 40m/s | ||
| 10mm–83mm | 25A | M | 8 | 45m/s | |||
| 32mm–120mm | PA | F100 | N | 9 | |||
| 63mm–120mm | 31.75mm | SA | F120 | P | |||
| 32mm | GC |
Overview
Internal or bore grinding is a critical finishing operation used to create precision internal diameters in hardened and non-hardened components. Our Internal Grinding Abrasives are engineered to deliver tight tolerances, superior surface finish, and excellent form stability for high-speed precision grinding tasks.
Designed for use in ID grinding machines and CNC bore grinders, these abrasives are optimized for hard-to-reach areas, thin walls, and small bores found in automotive, aerospace, bearing, and hydraulic industries.
Applications
- Internal diameter (ID) grinding of bushings, sleeves, and tubes.
- Precision grinding of hydraulic cylinders, fuel injection parts, and valve bodies.
- Engine components: gears, pistons, and liners.
- Automotive and aerospace part finishing.
- Bearing bore grinding (inner rings).
- Mold and die industry for core pin and cavity ID work.
- Grinding of carbide and hardened steel inserts.
Features & Benefits
- High precision ID grinding with tight tolerance control.
- Minimal vibration for smoother bore finish.
- Suitable for small diameter bores and thin-walled components.
- Durable bonding for long wheel life and fewer dressing cycles.
- Available in vitrified and resin bonds.
- Custom shapes: mounted points, straight wheels, and internal segments.
Compatible With
- CNC Internal/Bore Grinding Machines (e.g., Studer, Danobat, Okamoto, Toyoda).
- Manual ID Grinders.
- High-speed grinding spindles and bore finishing tools.
- Precision finishing of hardened alloy steels, tool steels, and carbide parts.
- Toolroom and maintenance workshops.
- Aerospace & automotive OEMs.
Available Specifications
- Outer Diameter (OD): 6mm to 63mm.
- Thickness (T): 6mm to 120mm.
- Bore Size (H): 16mm to 32mm.
- U Slots: 4mm, 6mm, 11mm (where applicable).
- Grit Types: A, WA, AA, 38A, 25A, PA, SA, GC.
- Grain Sizes: F46 to F120.
- Hardness: H to P.
- Structure: 4 to 9.
- Speed Ratings: 33 m/s to 50 m/s.
- Mount Types: Unmounted / Mounted Points / Internal Segments.
Why Choose Our Abrasives?
- Precision-engineered for narrow bores and complex geometries.
- Consistent surface finish across batches.
- Custom sizing & profiling available for specific ID geometries.
- Longer wheel life means fewer replacements and downtime.
- Tested for performance in demanding grinding conditions.
- Reliable supply and expert support for on-time delivery and optimization.
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Get in Touch
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Phone Number
+91-9958389990
Email Address
racrotechabrasives@gmail.com
