P623M electric pump

For sequential lubrication systems

The P623 M electric-driven pumps were designed to withstand electromagnetic pulses (EMPs) from lightning strikes. The P623 M is an updated version of the P603 series pumps and is intended for sequential automatic lubrication systems.

Working closely with customers to develop products tailored to their specific needs, SKF developed the P623 M pump for marine and offshore wind applications. These pumps are also suitable for applications in construction, mining, and renewable energy where lightning protection is required. P623 M pumps are equipped with power supplies that convert 230 V to 24 V (control) with overvoltage protection, allowing for discharge of 8 kV (electrical ground). Pumps are available with a clamping plate for use in rotating applications or with a stirrer for stationary applications.

Features and Benefits

  • Reduced operational risks compared to standard automatic lubrication systems
  • High safety standards
  • Compliance of the lubrication system with high requirements

Application areas

  • Wind energy
  • Construction and mining equipment
  • Renewable energy sources
Brochures and manuals

Description

Technical specifications
Operating principle electrically driven piston pump
Lubricant plastic grease: up to NLGI 2
Number of lubricant outlets max 3
Feed to the pump element 0.22 cm3/move 0.0134 inches3/move
Tank capacity1) 4; 8; 10; 15; 20 l 1.06; 2.11; 2.64; 3.96; 5.28 gallons
Empty pump weight 8; 10; 12; 14; 19 kg 17.64; 22.05; 26.45; 30.86; £41.89
Working pressure max 320 bar 4640 psi
Operating temperature from −25 to +55 °C from −13 to +131 °F
Protection class IP 67
LPZ0 (Lightning Protection Zone) in accordance with the general standard EN61000-6-2 8 kV
Electromagnetic compatibility (EMC) 2014/30/EU
Dimensions
min. 439 x 220 x 278 mm 17.28 x 8.66 x 10.94 inches
Max. 976 x 220 x 278 mm 36.1 x 8.66 x 10.94 inches
Installation position Vertical, i.e. the lubricant reservoir is at the top
The pressure plate version can also be used in rotating conditions
Sample order
The product can be configured using a configuration code. The order template includes the applicable part number and an explanation.
P623MX-15XLBO-3K7-AC-H1(X2)
  • Pump model P623
  • Sequential systems
  • Corrosion load category C5-M
  • Tank capacity: 15L; 3.96 gallons
  • Reservoir type: for plastic grease, with low level control, filling the reservoir from the top
  • 3 pump elements K7 (4.0 cm³/min; 0.24 in³/min; piston ∅ 7 mm)
  • Power supply 120-240V AC ±10 %; 50-60Hz ±5 %; Motor 24V DC
  • Harting connector, 5-pin
More detailed information is provided in the product catalogue.
Pump elements
Part number Description Dosage volume
cm3/move inches3/move
645-29873-1 C3, pump element K7, including sealing ring 0,246 0,015
645-77196-1  C3, outlet, pump element Z7, including sealing ring 0,246 0,015
645-77734-1  C5-M, pump element K7, including sealing ring 0,246 0,015
645-77625-1  C5-M, outlet, pump element Z7, including sealing ring 0,246 0,015
Safety valve
Part number Designation Pressure Compound
624-29056-1 SVET-350-G 1/4A-D6 350 bar 5075 psi for pipeline ø 6 mm (ND)
624-29056-1 SVET-350-G 1/4A-D8 350 bar 5075 psi for pipeline ø 8 mm (ND)