Model Number Mounting
Weight
(Approx.)
Inertia
(Approx.)
oz-in-sec2
V/1000
RPM
RPM
(max)
Armature
Resistance
(dynamic)
Armature
Inductance
(henrys)
Outline
Dimensions
Mounting
Dimensions
Shaft
Size
(in.)
SA-740A-7
Face
3.0 oz 1.32 x 10-4 2.6v
12,000
40Ω
0.024h
Fig. 10
Fig. 1
.120
SB-740A-7 Flange 3.0 oz 1.32 x 10-4 2.6v
12,000
40Ω
0.024h
Fig. 10
Fig. 2
.120
SA-740A-2
Face
3.0 oz 1.32 x 10-4 7.0v
12,000
350Ω
0.18h
Fig. 10
Fig. 1
.120
SB-740A-2 Flange 3.0 oz 1.32 x 10-4 7.0v
12,000
350Ω
0.18h
Fig. 10
Fig. 2
.120
SA-757A-2
Face
3.0 oz 1.32 x 10-4 7.0v
12,000
350Ω
0.18h
Fig. 11
Fig. 1
.187
SB-757A-2 Flange 3.0 oz 1.32 x 10-4 7.0v
12,000
350Ω
0.18h
Fig. 11
Fig. 2
.187
SA-740B-1
Face
4.0 oz 2.27 x 10-4 20.8v
8,000
1000Ω
0.56h
Fig. 10
Fig. 1
.120
SB-740B-1 Flange 4.0 oz 2.27 x 10-4 20.8v
8,000
1000Ω
0.56h
Fig. 10
Fig. 2
.120
SA-757B-1
Face
4.0 oz 2.27 x 10-4 20.8v
8,000
1000Ω
0.56h
Fig. 11
Fig. 1
.187
SB-757B-1 Flange 4.0 oz 2.27 x 10-4 20.8v
8,000
1000Ω
0.56h
Fig. 11
Fig. 2
.187
1086 Goffle Road • Hawthorne, NJ 07506 • sales@servotek.com
Phone (973) 427-3100 • Fax (973) 427-4249 • www.servotek.com
SERVO-TEK ®
1086 Goffle Road • Hawthorne, NJ 07506 • sales@servotek.com
Phone (973) 427-3100 • Fax (973) 427-4249 • www.servotek.com
SERVO-TEK ®
1086 Goffle Road • Hawthorne, NJ 07506 • sales@servotek.com
Phone (973) 427-3100 • Fax (973) 427-4249 • www.servotek.com
SERVO-TEK ®
1086 Goffle Road • Hawthorne, NJ 07506 • sales@servotek.com
Phone (973) 427-3100 • Fax (973) 427-4249 • www.servotek.com
SERVO-TEK ®
A-Series Tachometer Generators
Instrument Type:
• 0.120 inch shaft diameter
• Small in size
• Ideally suited to instrumentation applications
Industrial Type:
• 0.187 inch shaft diameter
• Special front-end bearings for radial loads
• Ideal for pulley and belt drive applications
A-Series
1 to 10 volts/1000 RPM
B-Series
11 to 24 volts/1000 RPM
A-Series and B-Series Specifications
Maximum Driving Torque for A-Series and B-Series is 0.25 oz-in
Most units listed above are normally in stock
SA-757A-2 and SA-740A-2
SN-763A-2
SB-757B-1 and SU-7346B-1
B-Series Tachometer Generators
As is the case with the A-Series DC tachometer
generator, the B-Series also comes in instrument
and industrial configurations. Depending on the
unit, the output voltage ranges between 11 and 24
V/1000 RPM. Electrical characteristics, ripple,
linearity and temperature effects are the same as
the A-Series.
Other shaft sizes and mounting configurations are
available for most Servo-Tek generators.