SGB/STB Series (2-Plane)
Model |
SGB/STB-003NEII |
SGB/STB-03NEII |
SGB/STB-1NEII |
Workpiece Weight (kg) |
0.001 to 0.03 |
0.01 to 0.3 |
0.01 to 1 |
Max. Workpiece Diameter (mm) |
30 |
60 |
200 |
Max. Diameter for Belt Drive (mm) |
30 |
40 |
150 |
Span Across Bearings (mm) |
15 to 185 |
15 to 185 |
50 to 370 |
Workpiece Shaft Diameter (mm) (1) |
1.5 to 6 |
1.5 to 8 |
5 to 15 |
Drive motor (w) |
18 (stepping motor) |
18 (stepping motor) |
90 (variable speed) |
Bearing type (1) |
V bearing, one set |
Roller bearing, one set |
Min. Achievable Eccentric Distance(µm) (2) |
0.1 (mass eccentricity for a workpiece of max. weight) |
Min. Achievable Unbalance on One-Plane (g・mm) |
0.0008 |
0.003 |
0.01 |
Testing Speed (rpm) (3) |
700 to 3600 (depending on outer diameter of workpiece) |
Belt drive system (4) |
Downward-tangential and winding drive |
Size (W×D×H mm) |
240×330×220 |
240×330×220 |
500×500×500 |
Weight (kg) |
50 |
50 |
80 |
Power supply |
Single-phase 100V 10A 1KVA |
Model |
SGB/STB-3NEII |
SGB/STB-10NEII |
SGB/STB-30NEII |
Workpiece Weight (kg) |
0.03 to 3 |
0.1 to 10 |
0.3 to 30 |
Max. Workpiece Diameter (mm) |
200 |
300 |
300 |
Max. Diameter for Belt Drive (mm) |
150 |
150 |
150 |
Span Across Bearings (mm) |
50 to 370 |
60 to 520 |
60 to 520 |
Workpiece Shaft Diameter (mm) (1) |
5 to 25 |
5 to 25 |
10 to 40 |
Drive motor (w) |
90 (variable speed) |
200 (variable speed) |
200 (variable speed) |
Bearing type (1) |
Roller bearing, one set |
Min. Achievable Eccentric Distance(µm) (2) |
0.1 (mass eccentricity for a workpiece of max. weight) |
Min. Achievable Unbalance on One-Plane (g・mm) |
0.03 |
0.1 |
0.3 |
Testing Speed (rpm) (3) |
700 to 3600 (depending on outer diameter of workpiece) |
Belt drive system (4) |
Downward-tangential and winding drive |
Size (W×D×H mm) |
500×500×500 |
650×590×520 |
650×590×520 |
Weight (kg) |
80 |
200 |
Power supply |
Single-phase 100V 10A 1KVA |
Single-phase 200V 10A 2KVA |
Typical Applications
Small motors, small rotors, fans, hard disk drives, high speed rotating polygon mirrors, and rotating parts in general
(1) Standard machines include one standard bearing. Cost estimates for special bearings are available on request.
(2) The minimal achievable residual unbalance will vary with the workpiece weight and the test speed. Refer
to the attached sensitivity diagram for details.
(3) Depending on the form and weight of the workpiece, the test speed may be increased beyond the specified
range.
(4) Upward-tangential drive systems are available on request.