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885
cissoko
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The Parker Chelsea 885 Series Power Take-Off (PTO) isan ultra-heavy-duty, 10-bolt PowerShift extended-housing PTO engineered specifically to interface with the Allison 4000/4500/4700 Series automatic transmissionsThe defining engineering characteristic of the 885 Series is its solid, multi-gear internal architecture combined with a one-piece main shaft . By positioning the internal clutch pack at the far rear, the front sections of the PTO housing remain exceptionally narrow. This allows it to fit tightly against the transmission housing, clearing vehicle frame rails, side-mounted oil coolers, or auxiliary retarders without sacrificing heavy-duty torque or continuous horsepower capacity.
Uncompromising One-Piece Extended Shaft : Built as a single integrated unit rather than a separate PTO combined with a bolt-on shaft extension. This design completely eliminates intermediate connection splines , removing a common wear point and drastically increasing torque threshold limits under heavy shock loading.
Rear-Clutch Frame Cavity Clearance : By moving the internal clutch pack entirely to the rear of the unit, the front housing sections are narrowed significantly . This allows the main gear housing to tuck flush against the Allison transmission casing, clearing narrow truck frame rails.
Standard Anti-Fretting Wet Spline Output : Features Chelsea's Wet Spline (W) lubrication design as a standard configuration. This provides a constant bath of pressurized transmission oil directly over the mating pump shaft splines, completely eliminating fretting corrosion and extending pump lifespan.
Versatile Cooler and Retarder Adaptation : The casing geometry can be specifically ordered in specialized arrangements to clear transmission retarders, side-mounted oil coolers, or both simultaneously , allowing municipal truck fleets to run high-displacement hydraulic pumps.
| Parameter | Specification / Value |
|---|---|
| Mounting Type | 10-Bolt Aperture Footprint Configuration |
| Shift Type | PowerShift — Hydraulic or Electro-Hydraulic, suitable for hot shifting under power |
| Intermittent Torque Rating | 301–400 lb-ft (501+ Nm) |
| Output Power | 56+ HP (51+ kW) |
| Transmission Compatibility | Allison 3000/4000 Series, including variants equipped with auxiliary retarders and oil coolers |
| Output Options | SAE B, 2- or 4-bolt; SAE C, 2- or 4-bolt; ISO 7652 pump flanges; or direct cross-driveline companion flanges |
| Lubrication Options | Pressure Lube (P) or Wet Spline (W), designed to help prevent fretting corrosion on pump shafts |
Applications
Fire and Rescue Vehicles : Provides immediate, high-horsepower engagement under load to drive high-volume water pumps and aerial ladders.
Dump Trucks & Trailers : Operates the large hydraulic cylinders needed to raise and lower heavy dump beds quickly and safely.
Cranes & Boom Trucks : Supplies smooth, continuous hydraulic flow for precise control of telescopic booms and outriggers.
Vacuum & Sewer Cleaner Trucks : Runs high-capacity vacuum pumps and high-pressure water jetters for municipal and industrial cleanup.
Fuel & Chemical Tankers : Drives product pumps to safely offload bulk liquids and hazardous materials.
885 PTO are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
Answer : While both are 10-bolt extended-shaft PTOs designed for heavy Allison transmissions, the Chelsea 885 is a multi-gear design optimized to fit specific clearance envelopes and gear locations across the Allison 4000 and 4500 series , whereas the 892 series is specialized primarily for the unique case geometry of the Allison 4700 series transmission.
Answer : Because the extended one-piece main shaft pushes the hydraulic pump mounting flange completely beyond the rear of the transmission casing, a large hydraulic pump can create severe overhung weight. To absorb intense road vibrations and prevent chassis torsion, the unit must be anchored via the side 10-bolt pattern and reinforced with the rear support bracket .
Answer : Yes. When mounted to the PTO drive gear of an Allison transmission, power is fed directly from the engine's torque converter impeller hub. This configuration provides continuous engine-driven power whether the vehicle is parked stationary or driving at speed , which is mandatory for applications like snowplowing, refuse packing, or road sweeping.
Answer : No. While the 885 can be configured with an extra-large SAE D (1-3/4" 13-Tooth) shaft to drive massive pumps, the SAE D option is strictly unavailable on transmissions outfitted with an auxiliary cooler or retarder due to spatial envelope conflicts.
Answer : Metal-on-metal friction between a dry PTO output and a pump shaft creates microscopic movement that causes fretting corrosion, eventually welding the shafts together or stripping the teeth. The Wet Spline configuration keeps the mating shafts constantly lubricated in filtered oil , making it easy to swap or service hydraulic components years later.
6. Do you provide OEM or customized services
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
885 PTO are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the PTO does not contain hazardous materials.
Factory Testing: Every PTO is rigorously tested for performance, pressure, and leak integrity before shipping.
1.What's our advantages?
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
Of course we can. Just send me your logo we can make it for you.
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Cissoko hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Cissoko Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
All hydraulic pumps produced by Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the Cissoko hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.
Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.
