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.)
ST-7336A-7
Face
3.0 oz 1.32 x 10-4
2.6v 12,000
40Ω
0.024h
Fig. 8
Fig. 8
.120
ST-7336A-2
Face
3.0 oz 1.32 x 10-4
7.0v 12,000
350Ω
0.18h
Fig. 8
Fig. 8
.120
ST-7336B-1
Face
4.0 oz 2.27 x 10-4 20.8v 8,000
1000Ω
0.56h
Fig. 8
Fig. 8
.120
ST-7337A-2
Face
3.0 oz 1.32 x 10-4
7.0v 12,000
350Ω
0.18h
Fig. 8
Fig. 8
.187
ST-7337B-1
Face
4.0 oz 2.27 x 10-4 20.8v 8,000
1000Ω
0.56h
Fig. 8
Fig. 8
.187
SU-7346D-1 Flange
8.5 oz 4.54 x 10-4
45v
5,000
1750Ω
1.00h
Fig. 8
Fig. 5
.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 ®
Sealed DC Tachometers
1 to 45 volts/1000 RPM
Servo-Tek’s Ruggedized
PY Alternative (Up to 50 volts)
Sealed DC Tachometer Generator Specifications
Ruggedized Tachometer Generators
Servo-Tek ruggedized DC tachometer generators
are designed with sturdy aluminum housings and
strong mounting flanges. Other features offered
include extra-heavy armature shafts and bearings.
The mechanical flexibility of the ST-13212 allows
for the internal tachometer to be repaired or
replaced, without having to replace the expensive
anodized casting. The ST-13212 supplies outputs
from 2.6 to 50V/1000 RPM and runs at speeds
up to 5000 RPM. The shaft size is 5/16” in
diameter. The ST-12970 comes equipped with a
rubber coupling. It allows the unit to be driven
by a motor shaft with 0.167” wide slot. The
ST-12970 is also available with outputs up to
24V/1000 RPM and can run at high speeds.
Maximum Driving Torque for a sealed DC tachometer generator is 0.7 oz-in
Most units listed above are normally in stock
ST-7337A-2N and ST-7337B-1
ST-13212 and ST-12970
Sealed Tachometer Generators
Servo-Tek manufactures a complete line of sealed
units which are resistant against the harmful
effects of fluids. These units employ a one-piece
housing, a special shaft seal, and a form-fitted
rubber boot on the terminal end. Servo-Tek sealed
units meet electrical specifications after storage at
49ºC with 95% relative humidity for 24 hours.
These units are capable of enduring vibration
with amplitudes up to 0.03” total excursion at
frequencies from 4 Hz to 55 Hz in each of three
mutually perpendicular axes with no evidence of
physical damage. These units are available with a
low ripple output up to 30V/1000 RPM.