Stober 1 Servo Gear Units

Overview
K/KL Series Output Options
Diameters in BOLD BLUE are configurations readily available from inventory. Contact STOBER for delivery on other output sizes.
Solid
Shaft
Hollow
Bore
Wobble
Free
Bushing
(Stainless
Steel except
where
noted)
Carbon
Steel
Stainless
Steel
Carbon
Steel
Stainless
Steel
Inches
KL1 KL2 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10
Inches 5/8 3/4* 1 1-1/4 1-1/4 1-3/8 1-3/4 1-3/4 2-3/8 2-7/8 3-5/8 4-3/8
Metric 16 20 25 30 30 40 45 50 60 70 90 110
Inches 5/8 3/4 1 1-1/4 1-1/4 1-3/8 1-3/4 1-3/4 2-3/8 2-7/8 3-5/8 —
Metric 16 20 25 30 — — 45 — — — — —
Inches 5/8 3/4 1
1-3/16 1-3/8 1-7/16
1-1/4 1-7/16 1-1/2
2 2 2-3/8 2-3/4 3-1/4 4
Metric 16 20 25 30
30
40
40
35
50
50 60 70 70 —
Inches 5/8 3/4 1
1
2-15/16
1-1/8 1-1/4
1-1/2
1-1/2
2 — — 3
1-1/4 1-3/8
2
3-7/16
1-7/16
—
Metric 16 20 25 30 35 40
40
50
— 60 70 75 —
Single
&
Double
— 3/4 1
1
1-3/16
1-1/4
1**
1-3/16**
1-1/4**
1-3/8**
1-7/16**
1-1/2**
1-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-7/16
1-1/2
1-5/8
1-11/16
1-3/4
1-7/8
1-15/16
2
1-7/16
1-1/2
1-5/8
1-11/16
1-3/4
1-15/16
2
2-3/16
1-15/16
2
2-3/16
2-3/8
2-3/16
2-3/8
2-7/16
2-3/4
— —
30
Single — — 25 30
— — — — — — —
35
Metric
30
Double — — 25 30
40 40 40 — — — —
35
Carbon
Shrink Ring
Metric 16 20 25 30 35 40 50 50 60 70 90 100
Steel
* Shaft with key only (part number code P)
**Also available in carbon steel
K Series Standard & Optional
Output Flange Sizes
Base Module
Flange Size
K1 140, 160*
K2 160, 200*
K3 160, 200*, 250
K4 250*
K5 250*
K6 300*
K7 300, 350*
K8 350 400* 450
K9 450*
K10 550*
* This is the standard flange size shipped with the unit unless
otherwise specified. Optional flanges are not available for
all sizes.
Overhung Load Calculations
Pulling forces or overhung load of pulleys, sheaves, sprockets, etc. on the
reducer output shaft must not exceed the allowable limits shown in the
load/life/speed calculations below.
Note: Overhung load is measured at the center of the shaft extension. No
overhung load is encountered when a reducer is flange mounted and/or
coupling connected to another unit. However, the shafts of all components
must be accurately aligned and secured to prevent pre-loading of the bearings
and premature bearing failure.
Use the following formula to determine actual overhung load for a given drive:
Imperial OHL (lbs) =
126,000 x HP x K
D x n
Metric OHL (N) =
19,100 x kW x K
D x n
Where:
OHL
HP
kW
D
n
K
Overhung load (N or lbs)
Horsepower
Transmitted Kilowatt
Pitch Diameter (inches or meters) of Sprocket, Gear, Sheave, Pulley, etc.
Maximum Shaft RPM
1.00 Single Chain Drive; 1.25 Timing Belt Drive;
1.25 Spur or Helical Gear Drive; 1.50 V-Belt Drive; 2.50 Flat Belt Drive
K/KL Series: RIGHT ANGLE — Versatile Outputs
800.711.3588 • www.stober.com Servo Gear Units V.28 167