Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

SKF Lincoln
The SKF Lincoln 644-40550-4 is an electrical piston pump from the P203 series featuring a 24 V DC operating voltage, a flow rate of 4,0 cm³/min, and an 8 l plastic reservoir. Designed for grease lubrication up to NLGI Grade ≤ 2, this unit delivers a maximum operating pressure of 350 bar through 1 to 3 outlets with a G 1/4" connection thread. The component operates in S3 mode within a temperature range of -40 to +70°C, includes integrated level monitoring, and provides an IP6K9K ingress protection rating without a pressure switch, pressure gauge, or integrated control. Submit the exact part number, quantity, and application requirements to request a formal quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued SKF Lincoln references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against SKF Lincoln 644-40550-4. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.