GU400S / GU600S / GU1000S Series Cylindrical Grinders
- Available in 400mm (15.75"), 600mm (23.62") and 1000mm (39.37") between centers
- Swing over table 7 7/8" for GU400S, 12.6” for GU600S and GU1000S
- Variable spindle speed 16 ~ 450 rpm.
- Variable speed frequency drive.
- Semi-auto feed. Hydraulic powered traverse movement
- Hydrostatic bearing wheel spindle
- Wheel head provides rapid feed and manual feed for grinding
Rigid Machine Structure
The machine structure is manufactured from high-quality Meehanite cast iron, heat treated and stress relieved before machining. Slideways are high frequency hardened and precision ground. Maximum material stability for deformation-free and outstanding wear resistance.
Stable and Rigid Spindle Head
The spindle runs on precision bearings, ensuring maximum spindle stability. The design guarantees outstanding accuracy for ID/OD and face grinding.
The spindle head swivels +90°~ -30°
The spindle head on GU400S provides variable speed changed by variable speed frequency drive. The spindle heads on GU600S and GU1000S use servo motor.
Precision Wheel Head
The grinding wheel spindle is precision machined from high quality alloy steel SNCM-220, normalized, tempered, carburized and cryogenically treated, precision ground and polished to mirror finish.
Hardness exceeds HRC 62
No deformation, maximum wear resistance and lifetime accuracy are assured.
Special Hydrostatic Bearing
The wheel spindle uses a special hydrostatic bearing and is especially ideal for precision grinding work. Benefits include high speed, no friction between metals, no heat generation, no deformation, extra high accuracy rating and durability.
Advanced Hydrostatic Lubrication System
The slideways of the table and the wheel head are lubricated by an advanced automatic hydrostatic lubrication system. This provides various features, such as extremely smooth movement, added feed accuracy and superior grinding accuracy.
| Model | GU400S | GU600S | GU1000S |
| Capacity | |||
| Distance between centers | 15.75" | 23.62" | 39.37" |
| Swing over table | 7 7/8" | 12.6" | |
| Max. load of centers | 132 lbs | 220 lbs | |
| Max. external grinding diameter | 6 1/4" | 11" | |
| Wheel Head | |||
| Swivel angle | ±30° | ||
| Manual distance | 5.31" | 6.3" | |
| Auto rapid advance | 0.98" | 1.57" | |
| Sliding seat supplementary displacement | 3.74" (10" total) | ||
| Min. setting unit | 0.0001" | ||
| One turn of hand wheel (graduation) | 0.079" (0.00020") | ||
| Hand wheel straight infeed | 0 ~ 0.014" | ||
| Grinding Wheel | |||
| OD x Width x ID | 12" x 1.5" x 5" | 14" x 2" x 5" | |
| Speed (belt type) | 2085 (2496) rpm | 1783 (1940) rpm | |
| Spindle Head | |||
| Swivel angle | 120° (+ 90°, - 30°) | ||
| Center slope | MT3 | MT4 | |
| Spindle speed (variable) | 16 ~ 450 | ||
| Max load of spindle (tool holder included) | 33 lbs | 77 lbs | |
| Tailstock | |||
| Taper center | MT3 | MT4 | |
| Stroke | 0.79" | 0.98" | |
| Table | |||
| Swivel angle | 12.5° | 12° | 10° |
| Traverse speed | 1.97" ~ 157.48" / min | ||
| Auto reciprocate min. stroke | 0.12" | ||
| Feed of one turn of hand wheel (2-step) | 0.79" (0.08") | ||
| Motor | |||
| Wheel spindle | 3 hp | 5 hp | |
| Workhead spindle | 1 hp (inverter) | 1 hp (servo motor) | 1.74 hp (servo motor) |
| Hydraulic pump | 1 hp | ||
| Wheel spindle lubrication pump | 1/4 hp | ||
| Coolant pump | 1/4 hp | ||
| Internal grinding spindle | 1/4 hp | 1 hp | |
| Tank Capacity | |||
| Wheel spindle lubricating tank | 3.17 gallon | ||
| Hydraulic fluid tank | 17.17 gallon | ||
| Coolant tank | 26.42 gallon | ||
| Weight | |||
| Machine weight | 4,409 lbs | 6,613 lbs | 8,376 lbs |