KFG pumping unit with electric drive

For single-line and sequential lubrication systems

The KFG electric pump features a drive shaft with an eccentric, which drives up to three pump elements. It consists of four main components: a housing with pump elements, a reservoir with level monitoring, integrated control units, and additional accessories. The pump is available in eight sizes and two versions: for stationary use or with a grease pressure plate, allowing for use in any position. A range of additional accessories allows for reservoir filling, pump protection (pressure relief valve), or simple connection to a centralized lubrication system.

KFG versions are available for use in single-line and progressive lubrication systems.

Technical characteristics and advantages

  • Reliability: thanks to durable materials, robust components and designs for extreme operating conditions (forced-driven pump elements)
  • Ready-to-use pump design for reduced installation time
  • For specific application areas: Customised designs thanks to flexible unit configuration options
  • Versatility: Can be used in single-line and serial systems
  • Safety: filling level monitoring, lubrication system monitoring, pressure relief and control unit
  • Options: Top filling, various electronic devices

Application areas

  • Wind turbines (including rotating assemblies)
  • Construction equipment
  • On-road and off-road vehicles
  • Industry
Brochures and manuals
Category:

Description

Technical specifications
Operating principle electrically driven piston pump
Operating temperature range 1) from -30 to +70 °C from -22 to +158 °F
Working pressure 2) 200–300 bar 2900-4350 psi
Lubricant grease NLGI from 000 to 2
compatible with plastics, butadiene acrylonitrile rubber, copper and copper alloys
Outlet pipes from 1 to 3
Dosing volume per pump element 0.8; 1.3; 1.8; 2.5; 5.0 cm³/min 0.049; 0.079, 0.11, 0.15, 0.31 in³/min
Tank 2; 4; 6; 8; 10; 12; 15; 20 kg 4.4; 8.8; 13.2; 17.6; 22; 26.5; 33; 44 pounds
Material
pump body aluminum-silicon alloy
tank polyamide PA 6I, PMMA
Connection of the main pipeline M 14 × 1.5 with internal thread
power unit 12/24 VDC,
230 (100–273) VAC; (±10 %)
Protection class IP56
Dimensions
min. 266 × 208 × 229 mm 10.47 x 8.19 x 9.01 inches
Max. 268 × 227 × 1170 mm 10.55 x 8.93 x 46.06 inches
Installation position with pressure plate: any, including rotation conditions
without pressure plate: vertical
Sample order
The product can be configured using a configuration code. The applicable part number and explanation are provided in the order sample.
KFGS3FXXAXXDEB+924
  • KFG piston pump unit
  • Control unit IG502-2-I
  • Tank 6 kg
  • Application in vehicles
  • Without filling with lubricant
  • Without filling level control
  • The feed rate of the pump element with a spring return piston on the outlet pipe 1: 2.5 cm3/min
  • Fitting on the outlet pipe, 8 mm
  • Factory settings of the control unit
  • System voltage 24VDC
You can configure your product using the CAD configurator below. This will provide you with a specific order number.

Accessories

Pump elements deliver lubricant to lubrication points or distributors via lubrication lines. Five pump elements for flow rates from 0.8 to 5.0 cm³/min are available in two designs: with a spring-return piston or with a positively driven piston. In many cases, a pump element with a spring-return piston is the right choice. The pump element with a positively driven piston was designed for use in extremely cold conditions (down to -30 °C) or for handling high-viscosity lubricants. Up to three pump elements can be installed in a KFG pump unit. Possible mounting locations are the left, front, and right sides of the pump housing. The lubricant outlet on the pump element has an internal M14x1.5 thread for connecting lubrication lines or valves. If a pump element is not installed, the outlet on the pump housing is closed with a screw.

Pump elements
Part number Description Nominal performance
cm3/min inches3/min
KFG1.U0 1) pump element with a spring-return piston 5,0 0,31
KFG1.U1  2) pump element with a spring-return piston 2,5 0,15
KFG1.U2  2) pump element with a spring-return piston 1,8 0,11
KFG1_U3 KFG1.U3 2) pump element with a spring-return piston 1,3 0,079
KFG1.U4  2) pump element with a spring-return piston 0,8 0,049
KFG1.U0-E  2) pump element with a positively driven piston 5,0 0,31
KFG1.U1-E  2) pump element with a positively driven piston 2,5 0,15
KFG1.U2-E  2) pump element with a positively driven piston 1,8 0,11
KFG1.U3-E  2) pump element with a positively driven piston 1,3 0,079

To prevent excessive operating pressure, a rotary relief valve must be installed in the system. If the operating pressure exceeds the pressure relief valve's operating point, the valve opens, allowing the lubricant to escape. Pressure relief valves are primarily used in progressive systems. Options are available with SKF quick-release couplings, straight connectors, and G 1/4" female threads.

Safety valves
Order number Compound Pipeline, ∅
161-210-063 1) direct connection 8
161-210-061 1) SKF quick release coupling 8
161-210-065 1) direct connection 10
161-210-062 1) direct connection 12
161-210-012 2) direct connection 6
161-210-024 2) direct connection 8
161-210-066 2) direct connection 10
161-210-021 2) SKF quick release coupling 6
161-210-034 2) SKF quick release coupling 8
161-210-036 2) internal thread G 1/4

One of the pump's three lubricant outlets can be optionally equipped with a single matching filling nozzle instead of a single pump element for filling the unit using a filling tank (cartridge). The filling tank can also be used to fill the pump unit through one of the lubricant outlets. To do this, specify a filling nozzle in the order code instead of a lubricant outlet.

Filling nipple kit
Part number Description
169-000-174 filling nipple
169-000-171 filling tank
24-9909-0241 filling socket G 1/4, set

As an alternative to a cone-head nipple, units for industrial or vehicle applications can also be equipped with a filling port for filling with a filling pump, such as a hand pump with a container. The filling pump must be equipped with a suitable coupling and a hose port.

Filling nipple kit
Part number Description
24-9909-0244 KFG filling nipple kit, G 1/4
857-760-007 hose socket ∅ 13 mm
857-870-002 socket for hose ∅ 16 mm
995-001-500 coupling sleeve

Configure KFG for industrial applications, download CAD file

Configure KFG for rotating assemblies, download CAD file

Configure KFG for mobile use, download CAD file