Spring-end grinding machines Series WNM by WNJ
Spring-end grinding machines Series WNM by WNJ include models WNM12, WNM12-2, WNM2.5, WNM6, WNM9, WNM9-2—reliable and high-precision equipment engineered to efficiently handle both small-batch and mass production tasks. All models share a modern control system, robust construction, and a high degree of automation, while differing in specifications, configuration, peripherals, and optional equipment.
Use the table below to quickly compare key specifications and select the machine that best fits your production requirements.
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
20mm — 120mm
Wire diameter
3mm — 12mm
Spring lenght
20mm — 500mm
Working area
Number of trays
1pcs / 740mm
Quantity of grinding wheels
2pcs
Grinding wheel size
660mm x 170mm x 100mm
Grinding wheel rotation speed
965rpm
Engines and power supply
Total motor power
31kW
Lower Compensation Motor
0.37kW
Upper compensating motor power
2kW
Grinding motors power
11kW / 11kW
Motor power of tray rotating
3kW
Voltage
380V / 50Hz
Change Plate Motor
-
Feed motor power
-
Overall dimensions and weight
Weight
8400kg
Overall length
2600mm
Overall width
2400mm
Overall height
3200mm
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
20mm — 120mm
Wire diameter
3mm — 12mm
Spring lenght
20mm — 400mm
Working area
Number of trays
2pcs / 740mm
Quantity of grinding wheels
2pcs
Grinding wheel size
660mm x 170mm x 100mm
Grinding wheel rotation speed
950rpm
Engines and power supply
Total motor power
36kW
Lower Compensation Motor
0.37kW
Upper compensating motor power
0.25kW
Grinding motors power
11kW / 11kW
Motor power of tray rotating
3kW х 2pcs
Voltage
380V / 50Hz
Change Plate Motor
2.2kW
Feed motor power
-
Overall dimensions and weight
Weight
8600kg
Overall length
2600mm
Overall width
3200mm
Overall height
3300mm
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
5mm — 40mm
Wire diameter
0.3mm — 2.5mm
Spring lenght
8mm — 80mm
Working area
Number of trays
1pcs
Quantity of grinding wheels
2pcs
Grinding wheel size
220mm x 50mm
Grinding wheel rotation speed
2840rpm
Engines and power supply
Total motor power
4kW
Lower Compensation Motor
0.18kW
Upper compensating motor power
-
Grinding motors power
1.5kW / 1.5kW
Motor power of tray rotating
0.2kW
Voltage
380V / 50Hz / Three phase / AC
Change Plate Motor
-
Feed motor power
0.18kW
Overall dimensions and weight
Weight
1360kg
Overall length
1300mm
Overall width
1550mm
Overall height
1900mm
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
5mm — 60mm
Wire diameter
0.8mm — 6mm
Spring lenght
10mm — 200mm
Working area
Number of trays
1pcs
Quantity of grinding wheels
2pcs
Grinding wheel size
400mm x 55mm
Grinding wheel rotation speed
1440rpm
Engines and power supply
Total motor power
10kW
Lower Compensation Motor
0.37kW
Upper compensating motor power
1kW
Grinding motors power
3kW / 3kW
Motor power of tray rotating
1.5kW
Voltage
380V / 50Hz
Change Plate Motor
-
Feed motor power
-
Overall dimensions and weight
Weight
2180kg
Overall length
1700mm
Overall width
1450mm
Overall height
2300mm
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
10mm — 100mm
Wire diameter
1mm — 9mm
Spring lenght
10mm — 400mm
Working area
Number of trays
1pcs / 740mm
Quantity of grinding wheels
2pcs
Grinding wheel size
450mm x 65mm
Grinding wheel rotation speed
1465rpm
Engines and power supply
Total motor power
20kW
Lower Compensation Motor
0.18kW
Upper compensating motor power
1kW
Grinding motors power
7.5kW / 7.5kW
Motor power of tray rotating
1.5kW
Voltage
380V / 50Hz
Change Plate Motor
-
Feed motor power
-
Overall dimensions and weight
Weight
3300kg
Overall length
2100mm
Overall width
1900mm
Overall height
2750mm
Specifications
Basic feauturies
Control
CNC
Spring feeding method
Downfeed
Capability
Spring diameter
10mm — 60mm
Wire diameter
1mm — 9mm
Spring lenght
10mm — 400mm
Working area
Number of trays
2pcs / 580mm
Quantity of grinding wheels
2pcs
Grinding wheel size
450mm x 80mm x 65mm
Grinding wheel rotation speed
1400rpm
Engines and power supply
Total motor power
23kW
Lower Compensation Motor
0.18kW
Upper compensating motor power
1kW
Grinding motors power
7.5kW / 7.5kW
Motor power of tray rotating
1.5kW х 2pcs
Voltage
380V / 50Hz
Change Plate Motor
1.5kW
Feed motor power
-
Overall dimensions and weight
Weight
4300kg
Overall length
2250mm
Overall width
2400mm
Overall height
2750mm