84944 / 84961

Hydraulically operated piston pump for use with single-line systems

Model 84944

Models 84944 and 84961 are pumping systems designed to operate centralized lubrication systems that utilize single-line, parallel grease metering components. The pump is double acting, dispensing lubricant on both the up and down strokes. These units are designed for off-road equipment that utilizes 24 V DC power sources. 

These units can be used in conjunction with: Models 244270 (not potted) or 249605 (potted) cycle timers. Model 84944 hydraulically operated pump with 60 lb metal reservoir and vent valve (basic pump). Model 84961 basic pump (similar to Model 84944 but without reservoir or vent valve). These products include a pump and hydraulic control.

Features and benefits:
  • Robust
  • Pump operates by an electrical signal
  • Supplied with metal reservoir with removable cover for easy filling
  • Includes a hydraulic operated solenoid vent valve 24 V DC
  • Includes a hydraulic pressure reduction valve rated 4 to 55 bar (60 to 800 psi) output
  • Bulk filling method
  • For use with single-line metering devices
  • Technical features
    Function principlehydraulically operated, double-acting piston pump
    Metering quantity180 cm³/ min11 in³/ min
    Lubricantgrease NLGI 0, 1, 2
    Operating temperature–40 to +57 °C–40 to +135 °F
    Fluid inlet temperaturemax. +99 °Cmax. +210 °F
    Hydraulic inlet pressuremin. 20 bar
    max. 205 bar
    min. 300 psi
    max. 3000 psi
    Reservoir capacity27 kg60 lb
    Materialsteel, brass, copper, polyurethane, nitrile
    Connection outlet3/4 NPTF (M)
    Hydraulic inlet/outlet1/4 NPTF (M)
    Transmission ratio16:1
    Flow rate at 30 cycles/min3,8 l/min1.0 gal/min
    Operating voltage24 V DC
    84944381 × 495,3 × 889 mm15 × 19.5 × 35 in
    8496176 × 177,8 × 866,8 mm3 × 7 × 34.13 in
    Mounting positionvertical
  • Applications
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