SIX Series: Spur Gearheads
NEMA Dimensions Precision Gearheads

Design Features
- One-piece gear cluster
- High-quality spur gearhead
- Input pinion with balanced clamp collar
- Quick installation
- High reliability design
- High strength steels
- High shaft loading capacity
- Viton O-Rings sealed at each joint
- Sealed ball bearings
- High efficiency design
- All gears are heat treated
- NEMA mounting standards
- 2 year warranty

PART NUMBER |
A PILOT DIAMETER (in.) |
B SQUARE FLANGE (in.) |
C SHAFT LENGTH (in.) |
D SHAFT DIAMETER (in.) |
E PILOT LENGTH (in.) |
F FLANGE THICKNESS (in.) |
G KEY LOCATION (in.) |
023SIX 034SIX 042SIX 056SIX |
1.498/1.500 2.873/2.875 2.185/2.187 4.498/4.500 |
2.25 3.25 4.20 5.75 |
1.00 1.25 1.50 2.00 |
.3745/.3750 .4995/.5000 .6245/.6250 .9995/1.0000 |
0.062 0.062 0.062 0.125 |
0.188 0.375 0.500 1.000 |
0.38 0.56 0.50 0.63 |
PART NUMBER |
H KEY HEIGHT (in.) |
I HOUSING DIAMETER (in.) |
J BOLT HOLE DIAMETER (in.) |
K BOLT HOLE CIRCLE (in.) |
KEY WIDTH/ WOODRUFF KEY (in.) |
RADIAL SHAFT LOADING (LBS.) |
AXIAL SHAFT LOADING (LBS.) |
023SIX 034SIX 042SIX 056SIX |
.047 .062 .078 .125 |
2.95 4.38 5.51 7.87 |
0.205 0.220 0.280 0.410 |
2.625 3.875 4.950 7.000 |
0.094 / #303 0.125 / #404 0.156 / #505 0.250 / #808 |
75 100 150 200 |
75 125 150 300 |
PART NUMBER |
L GEARHEAD LENGTH (in.) |
BACKLASH STD/LOW (ARC-MINUTES) |
CONTINUOUS TORQUE MAX (IN LBS.) |
MOMENTARY TORQUE MAX (IN LBS) |
GEARHEAD WEIGHT (LBS.) |
MAX INERTIA REFLECTED TO INPUT (OZ. IN. SEC2) |
PINION GEAR INERTIA (OZ. IN. SEC2) |
023SIX 034SIX 042SIX 056SIX |
2.25 3.00 3.75 4.50 |
20/10 20/10 20/10 20/10 |
20 60 200 350 |
30 90 300 500 |
1.5 3.5 6.5 15.5 |
7.15E-04 5.35E-04 4.33E-03 6.05E-03 |
7.59E-04 1.52E-03 7.59E-03 4.57E-02 |
AVAILABLE RATIOS AND SHAFT ROTATION* | SPECIFICATIONS | |||||
SIZE 023 SIZE 042 |
3:1 5:1 10:1 15:1 20:1 30:1 50:1 100:1 3:1 |
SAME SAME SAME OPPOSITE OPPOSITE OPPOSITE OPPOSITE SAME SAME |
SIZE 034 SIZE 056 |
3:1 5:1 10:1 15:1 20:1 30:1 50:1 100:1 3:1 |
SAME SAME SAME SAME OPPOSITE OPPOSITE SAME SAME SAME |
Input RPM: 4000 Max. Minimum Efficiency: 90% Operating Temperature Range -40F to +250F Note: Size 056 Requires a Mounting Adapter Motor Mounting Hardware Supplied |
ALL SPECIFICATIONS SUBJECT TO CHANGE.
*Rotation references the gearhead output shaft
direction with respect to motor shaft direction.