Star SU TRU TECH TT8500
Image: star-su.com, Star SU
Key Specifications
Spindle Power
Accuracy
grinding unit
max grind length
max grind diameter
min grind diameter
How much does the Star SU TRU TECH TT8500 cost?
Price estimate
We do not have a price for the Star SU TRU TECH TT8500 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Star SU TRU TECH TT8500 is the small centerless profile grinder of the TRU TECH line, which Star Cutter describes as ideal for carbide blank preparation. It grinds diameters up to 3 in (76 mm) over a maximum length of 7.5 in (191 mm), and its footprint is only 1,372 mm x 839 mm x 2,032 mm.
It is a simpler machine than the TRU TECH T93XM. Of its 3 axes, 2 are fully programmable, in increments of 0.0001 in. The standard spindle is 2 hp (1.5 kW), with 3 hp (2.2 kW) as an option, and the electrical supply is a 20 Amp circuit at 208-230V 60Hz.
Travels are 18 in (457 mm) in X, 10.75 in (273 mm) in Y and 7.5 in (191 mm) in Z. The wheel is up to 8 in (200 mm) in diameter, and profiles are produced with a standard 1A1 wheel. The part is held in the TT-5000 grinding unit, and Star Cutter quotes part runout of less than 0.0025 mm.
Programs are written in the icon based conversational software and shown on an LCD flat panel monitor. Coolant is held in a stainless steel tank with bag filtration. Shipping weight is 2,500 lbs (1,134 kg). Length and diameter probing, automatic wheel dressing, mist extraction and a fire suppression system are options.
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Unit | TT-5000 |
| Max Grind Length | 7.5 in (191 mm) (application specific) |
| Max Grind Diameter | 3 in (76 mm) |
| Min Grind Diameter | Tooling dependent |
| X Axis Travel | 18 in (457 mm) |
| Y Axis Travel | 10.75 in (273 mm) |
| Z Axis Travel | 7.5 in (191 mm) |
| Wheel Size | 8 in (200 mm) max |
| Spindle Motor Power | 2 hp (1.5 kW) standard; 3 hp (2.2 kW) optional |
| Positioning Accuracy | ±0.00010 in (0.0025 mm) minimum accuracy |
| Part Runout | less than 0.0025 mm |
| Axes | 3-axis; 2 fully programmable within 0.0001 in increments |
| Power Requirement | 20 Amp: 208-230V 60Hz |
| Machine Dimensions | 1,372 mm x 839 mm x 2,032 mm (54.0 in x 33.0 in x 80.0 in) (L x W x H) |
| Shipping Weight | 2,500 lbs (1,134 kg) |
Specifications sourced from star-su.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Small footprint: 1,372 mm x 839 mm x 2,032 mm
- Grinds up to 3 in (76 mm) in diameter and 7.5 in (191 mm) in length in the TT-5000 grinding unit
- Part runout of less than 0.0025 mm, as stated by Star Cutter
- Runs from a 20 Amp supply at 208-230V 60Hz
Limitations
- Only 2 of the 3 axes are fully programmable
- Standard spindle power is 2 hp (1.5 kW); 3 hp (2.2 kW) is an option
- Stated accuracy is ±0.00010 in (0.0025 mm), against ±0.00005 in (0.0013 mm) for the TRU TECH T93XM
Best For
Frequently Asked Questions
01
Centerless profile grinding of small cylindrical parts. Star Cutter calls it ideal for carbide blank preparation, from small lot sizes to large ones. The listed grinding modes are profile, plunge, peel, in-feed and thru-feed, all with a standard 1A1 wheel.
02
Maximum grind diameter is 3 in (76 mm) and maximum grind length is 7.5 in (191 mm), which the maker marks as application specific. Minimum diameter depends on tooling. Travels are 18 in (457 mm), 10.75 in (273 mm) and 7.5 in (191 mm), and the wheel is up to 8 in (200 mm).
03
The TRU TECH T93XM is the larger machine: its table lists ±0.00005 in (0.0013 mm) minimum accuracy and a 3 hp (2.2 kW) standard spindle, and all 3 of its axes are programmable. The TT8500 has 2 fully programmable axes, a 2 hp (1.5 kW) standard spindle and ±0.00010 in (0.0025 mm) accuracy, in a much smaller frame.
04
The table lists 20 Amp at 208-230V 60Hz. Shipping weight is 2,500 lbs (1,134 kg). Plan the coolant side as well: the machine has a stainless steel tank with bag filtration, and application specific oil filtration and mist extraction are listed as options.
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