Page 34 - Multi-line-automatic

Pump unit

RA 20 / 45
Pump units for grease

Product description
Technical data
The RA 20/45 radial piston pump features a modular design
that enables use of up to three stackable pump elements, and Function principle radial piston pump with stackable
pumping elements, rotary
outlet reduction or extension can be achieved easily or electrically operated
Metering quantity per outlet 0,007–0,02 cm 3 /revolution
The displacement of all outlets from a pump element is 0.0004–0.0012 in 3 /revolution
adjustable by a common setting device with a range of 33 Outlets 1 to 12 (max 3 elements with
to 100% The grease reservoir contains a stirrer and screw Lubricant 1, 2 or 4 outlets)
grease: up to NLGI 2
conveyor to pressurize the grease into the suction chamber Operating peak pressure max 63 bar, 913 psi
This feature, in combination with a wide range of different Operating temperature –15 to +40 °C, +5 to 104 °F
selectable gear ratios, enables a small and continuous Protection class IP 55
2,0 or 4,5 kg, 4.4 or 10 lb
Reservoir 1)
lubricant flow without the use of extra on/off timers
Internal ratio 5:1, 10,5:1, 15:1, 25:1, 75:1, 125:1
Drive speed 10 to 245 min -1
Features and benefits E-motor drive with 3-phase motor
Outlet connection G 1 / 8
• Modular, pump-to-point solution for 1 to 12 Dimensions depending on the model
lubrication points min 353 × 180 × 180 mm
max 660 × 325 × 180 mm
• Suitable for standard NLGI 2 greases min. 13.9 × 7.1 × 7.1 in
max. 26 × 12.8 × 7.1 in
• Grease reservoir for 2 or 4 5 kg (4.4 to 10 lb), Mounting position vertical
optional level switch Options with level switch
• Covers feed rates of droplets
up to 10 cm /min (0.6 in /min)
3
3
1) Valid for ρ=1 kg/dm 3
• Simple system design with adjustable outputs
• Economical, multi-line grease pump
NOTE
Applications For further technical information, technical drawings,
accessories, spare parts or product function descriptions,
• Compact machinery
see the following publication available on
• Conveyor systems SKF com/lubrication:
• Water pumps 11103 EN, 951-170-230 EN

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