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Maximum torque recommendation
We recommend maximum torque not exceed 35 ft-lb for all P60 Series Gearboxes. It is possible to mount motors that will exceed this in higher gear reductions. Higher reduction gearboxes should be utilized primarily for speed reduction. Designs utilizing a P60 gearbox / motor combination that will exceed 35 ft-lb should include a method of limiting torque to prevent damage to the gearbox.

P60 Gearbox: Stock, Standard Shaft, RS-540/550 Mount, 4:1
P60 Gearbox: Stock, Standard Shaft, RS-540/550 Mount, 4:1
Code: P60K-4-0004
Price: $44.50 - $36.49
Volume Price
Quantity Price Each
1-4 $44.50
5-10 $40.05
11-50 $38.71
51-100 $36.49

Physical Specifications
Type: Planetary
Reduction: 4:1
Stages: 1 - 4:1
Gear Material: Steel
Weight: 6.5oz(184g)
Length: 1.5in(38.1mm)
Width (Square): 1.5 in(38.1mm)
Shaft Diameter: 0.50 in(12.7mm)
Shaft Length:1.5 in(38.1mm)
Shaft Key: 0.125 in(3.2mm)
Shaft End Tap: #10-32
Mounting Holes (8): #10-32

Click Here for data sheet (pdf)

Gearbox will be delivered assembled and tested; however, it will need to be disassembled to grease and mount the motor prior to use. No special tools are required, typically only a screw driver and allen wrench. A small arbor press or bench vise is useful for pushing the pinion onto the motor shaft. The gearbox MUST BE GREASED prior to use, grease IS NOT INCLUDED and must be purchased separately. We recommend Mobil XHP 222 Special grease; however, most lithium based ball bearing grease can be used. We do not sell grease separately, it can be readily purchased from most local auto parts stores or online suppliers such as MSC and McMaster among others.

This gearbox will mount one RS-540, RS-545, RS-550, RS-555 or similar motor.
MOTOR NOT INCLUDED - Motor must be purchased separately, Click for motors
For other motor mounting options and gearboxes with motors mounted see the P60 non-stock products.

Gearbox includes one mounting kit. Mounting kit contains everything required to mount 1 motor including pinion, screws, and lock washers to attach the motor to the gearbox.
The correct pinion for this gearbox is the P60P-GM4032, additional pinions can be purchased separately or as a complete mounting kit.

Mounting a large load to the end of an unsupported shaft may damage the gearmotor. The shafts on these motors are supported by two ball bearings making them fairly rugged; however, we do not recommend them to be used with large overhung loads. We recommend using a design that supports the end of the shaft. If it is not possible to support the end of the shaft, we recommend mounting the load as close to the face of the gearmotor as possible and cutting the shaft to length. Our 1.5in square, 1/2in shaft bearing block provides a simple and effective way to support the shaft.

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