Split Shaft Power Take Off

Split Shaft Power Take Off.

Eliminate the cost and dead weight of a deck engine by using the main engine to power both the truck and deck equipment. Cotta Split Shaft PTO’s (sometimes called Split Shaft Transfer Cases) allow one engine to do the job of two by routing main engine power to either the rear wheels or the deck equipment.

This is accomplished by using a split input shaft in combination with a single clutching sleeve. In road position engine power is connected straight through to the drive axle. In PTO position the alxe drive shaft is disengaged and engine power is re-directed up through the gear train to outputs to operate the deck options such as pumps, compressors, blowers, etc. The clutch is designed so that it will not engage in both the PTO and truck mode at the same time. In operation you drive to the work site, shift to PTO, and go to work.

Although Spilt Shaft PTO’s look similar to transfer cases they are quite different. Transfer cases (or drop boxes) typically are used to transfer power to the font and rear wheels. Often a front axle disconnect is used to disconnect the front wheels for “roading”. In operation, power is input at the top, drops down through the gear train and is transferred to the rear and front wheels.

In split shafts, power is input to the bottom shaft and is directed either through to the drive axle, or, up to the deck equipment. The clutch design prevents operation in road and PTO at the same time.

Split Shaft compared to Transfer Case

Split Shaft PTO’s come in capacities to 1000 HP with many accessory drive options available.

The following table is a spectrum view of available sizes. There are scores of configurations and options available as well as custom designs. Contact a Cotta Sales Engineer for application assistance.

Model Nominal Capacity Gears Input to output Center distance Input to output Max Input Speed rpm Ratio to PTO Weight (lbs)
TR2165 550 HP 4 20 in. 3000 1:1.07 overspeed 1200
TR2191 800 HP 3 26 in. 3000 1:1 1100
TR2090 525 HP 2 8.5 in. 3000 1:1.08; 1:1.59 overspeed 500
TR1883 750 HP 2 13.7 in. 2800 3.69, 2.94, 2.7, 1.95 reduction 900
TR2237, TR2238 475 HP 3 17 in. 3000 1:1, 1.2, 1.4 overspeed 600
Model TR2165
Nominal Capacity 550 HP
Gears Input to output 4
Center distance Input to output 20 in.
Max Input Speed rpm 3000
Ratio to PTO 1:1.07 overspeed
Weight (lbs) 1200
Model TR2191
Nominal Capacity 800 HP
Gears Input to output 3
Center distance Input to output 26 in.
Max Input Speed rpm 3000
Ratio to PTO 1:1
Weight (lbs) 1100
Model TR2090
Nominal Capacity 525 HP
Gears Input to output 2
Center distance Input to output 8.5 in.
Max Input Speed rpm 3000
Ratio to PTO 1:1.08; 1:1.59 overspeed
Weight (lbs) 500
Model TR1883
Nominal Capacity 750 HP
Gears Input to output 2
Center distance Input to output 13.7 in.
Max Input Speed rpm 2800
Ratio to PTO 3.69, 2.94, 2.7, 1.95 reduction
Weight (lbs) 900
Model TR2237 TR2238
Nominal Capacity 475 HP
Gears Input to output 3
Center distance Input to output 17 in.
Max Input Speed rpm 3000
Ratio to PTO 1:1, 1.2, 1.4 overspeed
Weight (lbs) 600

Applications for split shafts include: drill rigs, vacuum trucks, hydraulic pumps, compressors, winch drives, rotary tables, and just about any other vehicle with deck mounted equipment.

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