# Tool grinder OPTIgrind GH 20T

- Price: 42 576 ₴ incl. VAT (35 480 ₴ excl. VAT)
- Availability: in stock
- Manufacturer: Optimum
- Art. 3100125
- Category: Tool grinders
- URL: https://melita.com.ua/en/tovar/verstat-dlia-zatochuvannia-instrumentu-optigrind-gh-20t
- Seller: NTC Melita LLC, Dnipro; +380 50 362-09-72; melita10042015@gmail.com

## Specifications

| | |
|---|---|
| Manufacturer | Optimum |
| Country of origin | Germany |
| Warranty period | 12 months |
| Grinding wheel speed | 5000 rpm |
| Max. grinding speed | 35 m/s |
| Motor speed | 2750 rpm |
| Tool holder travel | 140 mm |
| Tool holder fine adjustment | 18 mm |
| Longitudinal axis fine adjustment | 6 mm |
| Setting angle, vertical / clearance | 0 - 40° |
| Setting angle, horizontal / taper grinding | 0 - 180° |
| Negative setting angle | 0 - 52° |
| Fixed swivel angles | 22 x 15 / 180° |
| Clamping range | 1 - 12 mm |
| Collet type | 385E (5C), DIN 6341 |
| Length | 350 mm |
| Width | 450 mm |
| Height | 340 mm |
| Weight | 45 kg |
| Motor power | 0.37 kW |
| Voltage | 400 V |
| Frequency | 50 Hz |

## Description

Technical description:
- A universal tool grinder used for sharpening various cutting tools, with the ability to grind different cutting edge angles, both positive and negative.
- The GH 20T sharpener offers a wide range of angle settings for the moving tool holder assembly.
- The OPTIgrind GH 20T has two clamping devices for the tool being sharpened: one for end mills, drill cutting edges and lands, and centre drills, the other for lathe tools, etc.
- High grinding accuracy on the OPTIgrind GH 20T is ensured by a solid cast bed whose weight easily dampens vibration, while the precision spindle allows highly accurate work.
- Users note that the OPTIgrind GH 20T tool grinder is easy to operate and reliable in service.
- The indexing head has 24 locking positions for rotation angles.
- Delivery includes 5 pcs 5C collets, sizes 4/6/8/10/12mm.
- Adjustable handwheels with micro-feed and graduated dials.
-  
Specifications:
 | 
Sharpener model | 
GH 20T | 
Item No. | 
3100125 | 
Motor | 
370 W | 
Supply voltage | 
380 V | 
Speed | 
5000 rpm | 
Maximum wheel peripheral speed | 
35 m/s | 
Tool holder longitudinal feed | 
140 mm | 
Tool holder micrometric longitudinal feed | 
18 mm | 
Tool holder micrometric cross feed | 
6 mm | 
Vertical / clearance angle adjustment | 
0° — 40° | 
Horizontal angle adjustment / taper grinding | 
0° — 180° | 
Negative angle adjustment | 
0° — 52° | 
Sharpening single-flute cutters* | 
up to ø12 mm | 
Sharpening lathe tools | 
up to 21 x 21 mm | 
Sharpening drills* | 
ø from 4 to 12 mm | 
Sharpening end mills* | 
up to ø12 mm | 
Collet type | 
385E (5C)
 DIN 6341 Ø 37.5 mm;
 L = 89 mm; 20 ° | 
Collet size | 
Ø 4/6/8/10/12 mm | 
Machine dimensions | 
350 x 450 x 350 mm | 
Machine weight | 
45 kg | 
Scope of delivery:
- 5 collets 5C, sizes 4 / 6 / 8 / 10 / 12 mm.
- Corundum wheel 100 x 50 ø20 mm
- Diamond wheel 100 x 50 ø20 mm
- Dressing diamond.
- Operating manual in Russian.
- Round belt, spare — 1 pc.
- Cup wheel mounting wrench — 1 pc.
- Clamping rings for the twist drill sharpening attachment — 1 pc.
- Insert for the twist drill attachment — 1 pc.
- Chuck fixing handle — 1 pc.
- Open-end wrench, size 38-42, for refitting the collet chuck — 2 pcs.
- Spindle travel lock — 1 pc.
Setting tool for the OPTIgrind GH 20T grinder (supplied).
Lathe tool clamping device (supplied).
Corundum cup grinding wheel ø 100 x 51 x ø 20 mm, diamond cup grinding wheel ø 100 x 51 x ø 20 mm (supplied fitted to the machine).
Twist drill sharpening attachment.
End mill sharpening attachment.
Collet set 385E (5C) DIN 6341 ø 37.5 mm, L = 89 mm, collet sizes ø 4/6/8/10/12 mm/