Conveyor Pulleys- Shafting0 pages

#1180 HDCP Catalog_#1180 HDCP Catalog 12/6/12 2:50 PM Page 69

Shafting

Martin offers a wide variety of solutions for your

shafting needs. We offer a number of materials

from cold nish ½" diameter to hot roll material in

excess of 15" diameter. Stock shafting material is
available in several grades including 1144, 1045,
4140 and stainless steel. Our machining

capabilities are virtually unlimited featuring CNC
lathes, as well as engine lathes, vertical milling

machines, horizontal milling machines and more

to modify every shaft exactly to your specications
for your unique application.

Diameters shown in table are standard sizes

recommended for general use. Standard

bushings, bearings, couplings, pulleys, sheaves,

clutches, backstops, and other conveyor items are
commonly found in these diameters.

Shaft Keyseats
Shaft keyseats are commonly used beneath
pulley bushings and with a drive. Pulley keyseats
for standard pulleys start 1/2" inside the face and
are keyed through the bushing. Location of drive
keyseats are standard and the size is determined
by the shaft diameter. Additional keyseats or
non-standard sizes can be manufactured per
request.

Shaft Turn Downs (Stepped Shafts)
For larger shafting it is common to turn the shaft
down for a more economical selection of
bearings and drives. The turndown is generally
less than 25% of the original diameter and the
two different diameters should be joined with a
generous and smooth fillet to reduce stress
concentrations.

Conveyor Shafting should be selected to keep
deflection to a minimum and maintain the
integrity of the pulley assembly core. Call your
Martin representative to properly select the shaft
for your pulley and conveying needs.

Standard
Shaft Diameters

15/16
1-3/16
1-7/16
1-11/16
1-15/16
2-3/16
2-7/16
2-11/16
2-15/16
3-7/16
3-15/16
4-7/16
4-15/16
5-7/16
6
6-1/2
7
7-1/2

*Tolerances for shang diameters are as follows:
Plus

Minus

Up to 1-1/2"

0.000

0.002

Over 2 1/2" to 4"

0.000

0.004

Over 6" to 8"

0.000

0.006

Over 1-1/2" to 2 1/2"

0.000

Over 4" to 6"

0.003

0.000

Over 8" to 9"

0.005

0.000

Over 9"

0.007

0.000

0.008

* Special tolerances available upon request.

Overall
Shaft Length
Drive Side
Extension

KS1

KS2

Bearing
Centers

Major Shaft Diameter

Keyseat 1

x

x

Shaft Diameter at Hub

Keyseat 2

x

x

Shaft Diameter at Bearing

Direction of Rotation From Drive End

Shaft Diameter at KS1

Thickness
Lagging

Shaft Diameter at KS2

Type

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