Chelsea Products Division, Parker Hannifin Corp.

Chelsea Products Division, Parker Hannifin Corp.

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Being a solutions provider means helping our customers achieve higher levels of success by engineering the best Power Take-Off systems for their requirements. It means looking at the customer applications from many angles to find new ways to create value.

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523 Series Power Take-Off

Product From Chelsea Products Division, Parker Hannifin Corp.

The Chelsea 523 Series Power Take-Off, or P.T.O., is a two-gear designed rear mount P.T.O., which provides users with a compact housing that helps eliminate clearance issues. High-capacity bearings and superior gear designs provide users with torque ratings up to 260 ft/lbs (350 Nm). The 523 has 17 mounting adapters that will allow it to fit on 131 transmissions. It features four shift options, which are integrated into the P.T.O. housing for a space-saving design. The cam lock shift mechanism provides users with a positive engagement for each shift cycle. The 523 has two speed ratios available to meet application requirements. The four direct mount pump flange options come standard with the wet s

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590 Series Power Take-Off

Product From Chelsea Products Division, Parker Hannifin Corp.

The Chelsea 590 Series Power Take-Off, or P.T.O., is designed for automatic transmissions that offer a rear-mount provision. The 590 offers simplified installation because there is no backlash to set. The rear-mounting position provides clearance for larger pump designs. The 590 is available with six direct-mount pump flanges. Each features a

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348 Series Power Take-Off

Product From Chelsea Products Division, Parker Hannifin Corp.

The Chelsea 348 Series Power Take-Off, or P.T.O., features a cast iron eight-bolt housing and heavy duty ball bearing on the output shaft, giving it a high torque rating and long service life. The eight-bolt housing eliminates the need for adapter plates to simplify installation and eliminate possible leak paths. The 348 Series is an air-shifted, forward- and reverse- speed P.T.O. Its flexible, air-shift design allows you to mount the air-shift cylinder in the best position for maximum clearance. The 348 Series has a torque rating up to 200 ft/lbs (271 Nm).

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280 Series Power Take-Off

Product From Chelsea Products Division, Parker Hannifin Corp.

The Chelsea 280 Series Power Take-Off, or P.T.O., combines the 277 and 278 Series into one model of P.T.O. It features a single, continuous-duty torque rating. Pump clearance issues have been improved with rotatable, cast iron flanges and the wet spline pump flange option provides seven to 10 times greater shaft life, according to the company. Broader coverage of speed ranges expands from five to nine ratios and includes lower and higher speeds that were not available in the past. There are three position options for the integrated solenoid valve, and a remote, mounted option provides maximum clearance under the truck. The standard output shaft features a positive stop for driveline outputs that eliminates the ability for shaft couplings to damage oil seals. This unit is designed for the 10-Bolt P.T.O. pattern on Allison and CAT Automatic transmissions. The pressure/lube hose is included. 

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590 Series PTO

Product From Chelsea Products Division, Parker Hannifin Corp.

The new 590 Series PTO from Parker Chelsea provides maximum power with a compact design, according to the company. The coaxial designed rear-mount PTO has a compact housing that helps eliminate clearance issues and was designed specifically for the new Allison TC10 transmission. High capacity bearings and superior gear designs give torque ratings up to 660 ft/lbs, or 900 Nm, for the ultimate performance and there is no need to de-rate the PTO for continuous applications. The 590 Series is a clutch pack design which allows for easy engagement with no gear clashing. The four direct mount pump flange options come standard with our Wet Spline design and provide increased PTO and pump shaft life. 

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899 Series PTOs

Product From Chelsea Products Division, Parker Hannifin Corp.

Because of the large physical size of the pumps used on oil field exploration and maintenance trucks, clearance has always been a challenge. Chelsea’s new 899 Series was designed with this in mind to provide maximum clearance for the 4700 Series transmissions. Another challenge is the torsional vibrations from today’s diesel engines that prematurely wear out mating PTO and pump splines. The Wet Spline System that lubricates the mating PTO and Pump shafts will increase the life of these components 7 to 10 times longer than a dry mating connection. The 899 features six speed ratios, eight output types and is a constant mesh shifter which is an excellent option for variable displacement piston pump applications.

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892 Series PTO

Product From Chelsea Products Division, Parker Hannifin Corp.

Because of the large physical size of the pumps used on maintenance truck applications, clearance has always been a challenge. Chelsea’s new 892 Series was designed with this in mind to provide users with maximum clearance for the 4700 Series transmissions. The 892 features six speed ratios, eight output types and six shift options. Torsional vibrations from today’s diesel engines can prematurely wear out mating PTO and pump splines. According to the company, the wet spline System lubricates the mating PTO and pump shafts will increase the life of these components 7 to 10 times longer than a dry mating connection. 

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Wet Line Systems

Product From Chelsea Products Division, Parker Hannifin Corp.

Chelsea’s Wet Line systems feature high pressure hoses with J.I.C. swivel fittings and suction and return hoses that have crimped fittings on one end so hose length can be adjusted as required. Installation is simplified, quick and easy. By packaging all the truck hydraulic, connector and related hydraulic system components into a single Wet Line kit, Chelsea says the system offers the following advantages: eliminates the guess work in PTO and hydraulic component selection, a single source and warranty for all Wet Line components and three line systems to protect the pump from overheating.

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Electronic Overspeed Controls

Product From Chelsea Products Division, Parker Hannifin Corp.

Chelsea’s Electronic Overspeed Controls (E.O.C.) for its powershift PTOs is a shift option used to protect auxiliary power equipment such as hydraulic pumps, generators and product pumps. It insures that the driven equipment operates within the operating limits required for varying applications. The E.O.C. is smaller in size than the original version, which greatly simplifies installation. No special tools, computers or equipment is required to set the high and low operating limits. This E.O.C. uses solid-state components in a tamper-resistant housing that has been tested to comply with all RFI and EFI emissions that may be found in trucks equipped with two-way radios.

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897 Series PTO

Product From Chelsea Products Division, Parker Hannifin Corp.

Parker Chelsea makes PTO and pump installation simpler and more reliable on refuse truck, fire apparatus and pumper cleaner trucks with the 897 Series PTO. Torsional vibrations from diesel engines prematurely wear out mating PTO and pump splines and the large physical size of the pumps have always been a challenge. Chelsea's 897 series is designed with these challenges in mind. The 897 provides maximum clearance and the wet spline system provides an extended shaft life. It is available with five speed ratios and eight output options providing broad coverage for all application requirements.

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