GP Series

Double Column Grinding Machine

Massive and Rigid Construction: The GP series double column surface grinding machine by Top-One is meticulously designed with a massive and rigid construction, ensuring exceptional precision in grinding extra-large workpieces.

Versatile Grinding Heads: Standard equipment includes a horizontal grinding head, with an optional vertical wheel head available upon request, providing versatility in machining options.

High Precision Z-Axis Downfeed: The machine features a high precision Z-axis downfeed capable of reaching 2 µm, meeting the most stringent requirements for high accuracy grinding.

With a massive and rigid construction, the GP series double column surface grinding machine from Top-One is designed and built for precision grinding for extra-large work pieces. This series of machine is equipped with a horizontal grinding head as standard equipment, and a vertical wheel head is available upon request. High precision Z-axis downfeed can reach 2 µm, which will fully meet high accuracy grinding requirements.

CATALOG

Offering customized specifications for specific machining needs

Features

Crossrail Movable Type

The ruggedly constructed beam provides a solid support for the horizontal and vertical grinding heads, resulting in outstanding stability during grinding operations.

The grinding head movement (Y-axis) is individually driven by a servo motor and transmitted through a precision ball screw for high positioning accuracy.

Model	GP-1700	GP-2200	GP-2700
Max. grinding surface (L x W)	2/3/4 x 1.2 M	3/4/5/6 x 1.6 M	3/4/5/6 x 2.0 M
Machining height	750 / 1000 /1250 mm
X axis travel	2000~4000 mm	3000~6000 mm	3000~6000 mm
Y axis travel	1500 mm	2000 mm	2500 mm
Z axis travel	750 (1000~1250) mm
Distance between columns	1700 mm	2200 mm	2700 mm
Table size (length)	2000~4000 mm	3000~6000 mm	3000~6000 mm
Table size (width)	1200 mm	1600 mm	2000 mm
T-slot	□22 mm
Max. table load	2M:2 /3M:4 /4M:6 Ton	3M:6 /4M:8 /5M:10 /6M:12 Ton	3M:6 /4M:8 /5M:10 /6M:12 Ton
Double V slide distance	700 mm	900 mm	1100 mm
X axis grinding speed	5000~30000 mm/min
Y axis rapid feed	3000 mm/min
Z axis rapid feed	2000 mm/min
Min. Z axis feeding	0.002 mm
M.P.G feeding increment	0.002 / x1x10x100 mm
Y-axis motor	Y-travel 750 mm: 4.4 kW (Y-travel 1000, 1250 mm: 5.5 kW)
Z-axis motor	Z-travel 750 mm: 2.9 kW (Y-travel 1000, 1250 mm: 4.4 kW)
Vertical spindle motor	12HP/6P (15HP optinal)
Horizontal spindle motor	20HP/4P (25HP optinal)
Grinding wheel	Horizontal: 508 mm x 50 mm x 203 bore / Vertical: 355 mm x 50 mm x 127 bore
Horizontal spindle speed	300~2000 RPM

*Note: Note:The machine specifications,dimensions and design characteristics are subject to change without prior notice.

Model	GP-3200	GP-3700
Max. grinding surface (L x W)	4/5/6 x 2.5 M	4/5/6 x 3.0 M
Machining height	750 / 1000 /1250 mm	750 / 1000 /1250 mm
X axis travel	4000~6000 mm	4000~6000 mm
Y axis travel	3000 mm	3500 mm
Z axis travel	750 (1000~1250) mm	750 (1000~1250) mm
Distance between columns	3200 mm	3700 mm
Table size (length)	4000~6000 mm	4000~6000 mm
Table size (width)	2500 mm	3000 mm
T-slot	□24 mm	□24 mm
Max. table load	4M:15 /5M:18 /6M:22	4M:18 /5M:22 /6M:25
Double V slide distance	1400 mm	1400 mm
X axis grinding speed	5000~30000 mm/min	5000~30000 mm/min
Y axis rapid feed	3000 mm/min	3000 mm/min
Z axis rapid feed	2000 mm/min	2000 mm/min
Min. Z axis feeding	0.002 mm	0.002 mm
M.P.G feeding increment	0.002 / x1x10x100 mm	0.002 / x1x10x100 mm
Y-axis motor	Y-travel 750 mm: 4.4 kW (Y-travel 1000, 1250 mm: 5.5 kW)
Z-axis motor	Z-travel 750 mm: 2.9 kW (Y-travel 1000, 1250 mm: 4.4 kW)
Vertical spindle motor	15HP/6P (20HP optinal)
Horizontal spindle motor	25HP/4P (30HP optinal)
Grinding wheel	Horizontal: 610 mm x 50 mm x 254 bore / Vertical: 405 mm x 50 mm x 203.2 bore
Horizontal spindle speed	300~2000 RPM	300~2000 RPM