About Kraft Power
Kraft Power Hydraulic & Power Transmission Solutions
Kraft Power Corporation, founded in 1965 and based in Woburn, Massachusetts, provides comprehensive power generation and energy solutions including hydraulic pump systems, power transmission components, and engineered fluid management for industrial, agricultural, marine, and renewable energy applications. The company specializes in designing and provisioning customized hydraulic and mechanical systems meeting exact operational demands.
Kraft Power's agricultural hydraulic pump drives are engineered for direct mounting to tractor PTO shafts, converting rotational input into high-volume hydraulic pressure for powering implements (balers, hay wagons, grain augers) and fluid transfer systems. Open-circuit and closed-circuit pump designs accommodate different application requirements and efficiency goals.
The company's industrial hydraulic portfolio includes gear pumps, piston pumps, and engineered systems for machinery requiring precise pressure regulation and high-cycle reliability. Custom manifold design and component integration reduce assembly burden on OEM customers building complex hydraulic systems.
Kraft Power's fluid coupling and transmission products enable smooth power transmission, vibration isolation, and variable-speed drive configurations essential in industrial production equipment, marine propulsion, and agricultural machinery. Systems are engineered for rugged field operation and extended service intervals.
ChatMRO users can search Kraft Power components by pump type (gear/piston), flow capacity (GPM at rated RPM), pressure rating, or application (agricultural PTO, industrial transmission), and instantly retrieve exact hydraulic solutions with performance curves and availability from industrial equipment distributors.
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Frequently asked questions
What's the difference between an open-circuit and closed-circuit hydraulic pump for agricultural applications?
Open-circuit pumps direct oil back to reservoir at low pressure when not actively driving loads (simpler, lower cost); closed-circuit designs maintain pressure during idle, suitable for continuous-duty applications like hay balers or combines. Choose open-circuit for periodic-duty implements; closed-circuit for high-utilization applications where efficiency and responsive control matter.
How do I size a Kraft Power hydraulic pump for my tractor's PTO shaft horsepower?
Start with your required implement flow rate (GPM) and maximum operating pressure (PSI, typically 1500-3000 for agricultural). Calculate: PTO Horsepower = (GPM × PSI) ÷ 1714. Select a pump rated at your required flow and pressure; verify your tractor's PTO horsepower is at least 20-25% higher than the pump's rated load to avoid engine stalling during high-demand peaks.
Can Kraft Power hydraulic systems handle ambient temperatures below freezing?
Standard mineral oil hydraulics thicken in cold, increasing viscosity and reducing flow. For winter operations, specify Kraft systems with cold-flow oils (lower pour point) or immersion heaters. Marine and arctic-rated systems from Kraft use synthetic hydraulic fluids maintaining fluidity below -30°F—consult the company for seasonal adaptation recommendations.
What maintenance schedule should I follow for Kraft Power hydraulic pump drives?
Change hydraulic oil every 500-1000 operating hours depending on duty cycle and filtration cleanliness; replace pump-mounted filters annually or when differential pressure indicators signal clogging. Inspect fittings and hose connections for leaks before each season. Proper filtration (<5 microns) and clean oil are the primary factors extending pump life to 2000+ operating hours.
Do Kraft Power open-circuit pump systems require special consideration for hose routing?
Yes, return lines from open-circuit systems must flow freely to reservoir; never throttle or block return lines (backpressure exceeding 25-50 PSI damages pump internals). Use large-diameter return hose and route above reservoir fluid level to prevent siphoning. Vented filler/breather caps prevent vacuum formation in the reservoir.