Parker 252 Series, Owner'S Manual

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Bulletin HY25-1806-M1/US
Owner’s Manual
252 Series
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
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General Information
Function of Auxiliary Power Shafts
An auxiliary power shaft transmits torque from the power source to the driven accessory. The shaft must
be capable of transmitting the maximum torque and RPM required of the accessory, plus any shock loads
that develop.
An auxiliary power shaft operates through constantly relative angles between the power source and the
driven accessory. Therefore, the length of the auxiliary power shaft must be capable of changing while
transmitting torque. This length change, commonly called “slip movement”, is caused by movement of the
powertrain due to torque reactions and chassis deflections.
Joint operating angles are very important in an auxiliary power shaft application. In many cases, the
longevity of a joint is dependent on the operating angles. (See chart below)
This information is limited to 1000 through 1310 Series applications. For applications requiring a series
larger than 1310, contact your local Chelsea distributor.
Determining Shaft Type
1) Solid or tubular?
a) In applications requiring more than 1000 RPM or where the application necessitates a highly bal-
anced auxiliary power shaft, a tubular shaft should be used.
b) Spicer’s solid shafting auxiliary power joints are designed for 1000 or less RPM intermittent
service such as:
Driving small hydraulic pumps
Driving winches
Driving low speed product pumps
2) Joint Series should be determined using the chart on the following page.
SPICER
®
UNIVERSAL JOINT OPERATING ANGLES
Prop. Shaft RPM
Max. Normal
Operating Angle
Prop. Shaft RPM
Max. Normal
Operating Angle
3000 5° 50' 1500 11° 30'
2500 7° 00' 1000 11° 30'
2000 8° 40' 500 11° 30'
Above based on angular acceleration of 100 RAD/SEC
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