GL Series

Double Column Grinding Machine

Precision Grinding Expertise: Developed by Top-One's R&D team, this machine excels in precision grinding for extra-large workpieces, ensuring highly efficient operations.

Rugged Construction: Ruggedly constructed for durability, the machine exhibits unmatched precision, providing reliable and consistent performance.

Crossrail Movable Design: The crossrail movable type design enhances stability, ensuring the wheel head achieves the highest level of stability, ultimately elevating the overall grinding quality.

Successfully developed by Top-One's R&D team, this machine is excellent for precision grinding on extra large workpieces that also require highly efficient operations.

This series of machine is ruggedly constructed, exhibiting unmatched precise performance. In addition, its crossrail movable type design ensures that the wheel head achieves the highest stability to upgrade the overall grinding quality.

Catalog

Offering customized specifications for specific machining needs

Features

Beam Clamping

The beam is clamped securely by hydraulic force in combination with the use of dise springs. This fully prewents the beam from slipping down to eliminate any loss in grinding accuracy.

Beam Elevation

The beam elevation is driven by an inverter controlled motor that drives a connecting shaft to transmit the two elevation gcrews at the left and right sides. This elevation driving system allows the beam to clovate synchronously at both ends, so as to ensure outstanding leveling accuracy of the beam.

Double Hydraulic Cylinders' Counter-balance

The beam elewation (Z-axis) is counters balanced by two hydraulic cylinders, enguring exceptionally smooth motion sand the best travel accuracy.

Horizontal Grinding Head (Standard)

The Top-One GL series Double Column Surface Grinding Machine can be mounted with a horizontal grinding head and a vertical grinding head, allowing surface grinding and angular grinding to be accomplished at a time. With both grinding heads, the increased grinding accuracy and afficiency can be achieved.

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
Grinding height	1000~2000 mm	1000~2000 mm	1000~2000 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	400 mm	400 mm	400 mm
W axis travel	850~1850 mm	850~1850 mm	850~1850 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	□22 mm	□22 mm
Max. table load	2M:2 /3M:4 /4M:6 Ton	3M:6 /4M:8 /5M:10 /6M:12 Ton	3M:9 /4M:12 /5M:15 /6M:18 Ton
Double V slide distance	700 mm	900 mm	1100 mm
X axis grinding speed	5000~25000 mm/min	5000~25000 mm/min	5000~25000 mm/min
Y axis rapid feed	3000 mm/min	3000 mm/min	3000 mm/min
Z axis rapid feed	2000 mm/min	2000 mm/min	2000 mm/min
Min.Z axis feeding	0.002 mm	0.002 mm	0.002 mm
M.P.G feeding increment	0.002 / x1x10x100 mm	0.002 / x1x10x100 mm	0.002 / x1x10x100 mm
Y-axis motor	2.9 kW	2.9 kW	2.9 kW
Z-axis motor	2.9 kW	2.9 kW	2.9 kW
Vertical spindle motor	12HP/6P (15HP optinal)
Horizontal spindle motor	20HP/4P (25HP optinal)
Grinding wheel	Horizontal: 20" x 50 mm x 203 bore / Vertical: 14" x 50 mm x 127 bore
Horizontal spindle speed	300~2000 RPM	300~2000 RPM	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
Grinding height	1000~2000 mm	1000~2000 mm
X axis travel	4000~6000 mm	4000~6000 mm
Y axis travel	3000 mm	3500 mm
Z axis travel	750 mm	750 mm
W axis travel	850~1850 mm	850~1850 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 Ton	4M:18 /5M:22 /6M:25 Ton
Double V slide distance	1400 mm	1400 mm
X axis grinding speed	5000~25000 mm/min	5000~25000 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	4.4 kW	4.4 kW
Z-axis motor	2.9 kW	2.9 kW
Vertical spindle motor	15HP/6P (20HP optinal)	15HP/6P (20HP optinal)
Horizontal spindle motor	25HP/4P (30HP optinal)	25HP/4P (30HP optinal)
Grinding wheel	Horizontal: 24" x 50 mm x 254 bore / Vertical: 16" x 50 mm x 203 bore
Horizontal spindle speed	300~2000 RPM