ZM multi-circuit gear pump units are self-priming and valvelesspumps. They are used in oil circulation lubrication systems with 5to 20 separate delivery circuits. Unused outlets must be returnedto the reservoir. The pumps consists of an electric motor, adapterflange, coupling and a gear pump. The pump can be mountedseparately from the reservoir or as a flanged pump on thereservoir. A special design with seals for horizontal mountingbelow lubricant level is available. The fluids to be pumped musthave enough lubricity for the pump to lubricate itself.
Some of these distribution pumps require an attached,single-circuit priming pump that operates separately. The primingpump restricts differential pressure within the multi-circuit pumpsand helps to provide uniform delivery rates. It is advisable tofilter the oil upstream of the distribution pump inlet.
Features and benefits
High viscosity range
Flexible due to up to 20 circuits per pump
Suitable for hydrostatic operation
Easy system planning
Space-saving pump design
Applications
Machine tools
General industry
Metal and plastic forming machinery
TECHNICAL DATAFunction principleelectrically operated, self-priminggear pumpLubricantmineral and synthetic oilsOperatingviscositydepending on model, 20–1000 mm2/sFlow rateper outletdepending on model:min. 0,015 l/min
max. 0,45 l/min
0.032 pts/min
0.951 pts/minOperating temperature+10 to 40 °C+50 to 104°FOutlets5-20Operating back pressuremax. 20 barmax. 290 psiSuctionheightmax. 500 mmmax. 19.7 inDrive speed670-1400min-1Motor1)3-phasemotorVoltage220-240/380-420 V AC at 50 HzRated power0,18–0,37kWPressure connectionG1/8 or M10×1Suction connectionG1/2 orM14×1,5
ZM50: M14×1,5 for ∅12 mm
ZM10: G1/2Protection classIP 54Dimensionsmin. 325 × 152 × 125mm
max. 460 × 208 × 160,5 mmmin. 12.79 × 5.98 × 4.92 in
18.11× 8.18 × 6.32 inMounting positionhorizontal, or flanged toreservoir2)
1)
Further motor designs available on request.
2)
Only flange design version with separate seal
ORDER INFORMATION ZM MULTI-CIRCUIT PUMP,SELF-PRIMING 1)PartnumberCircuits 4)Flow rate 6)Back pressureDrivespeedOperating viscosity
(outlets)VaVb
l/minl/minbarmin-1mm2/s
ZM502+1GD 2)55 ×0,2-2067020-2000ZM502-3+1GD 3)55× 0,2-2067020-2000
ZM505+1GD 2)55 ×0,45-1067020-500ZM505-3+1GD 3)55× 0,45-1067020-500
ZM1002+1GD 2)105 × 0,25 ×0,22069020-1000ZM1002-3+1GD 3)105× 0,25 × 0,22069020-1000
ZM1005+1GD 2)105 × 0,455 ×0,451069020-250ZM1005-3+1GD 3)105× 0,455 × 0,451069020-250
ZM1025+1GD 2)105 × 0,25 ×0,451569020-500ZM1025-3+1GD 3)105× 0,25 × 0,451569020-500ORDER INFORMATION ZM MULTI-CIRCUIT PUMP FOROPERATION WITH A SEPARATE PRIMING PUMP 1)PartnumberCircuits4)Flow rate 6)Pump inlet 5)Drive speedOperatingviscosity
(outlets)VaVb
l/minl/minbarmin-1mm2/s
ZM502-S2+1GD 2)54 ×0,2-3069020-500ZM505-S2+1GD 2)54× 0,45-3069020-500
ZM1002-S2+1GD 2)105 × 0,25 ×0,23069020-500ZM1005-S2+1GD 2)105× 0,455 × 0,453069020-500
ZM2101-2+1GD 2)2020 ×0,015 -30140020-1000ZM2102-2+1GD 2)2020×0,03-30140020-1000ZM2103-2+1GD 2)2020×0,05-30140020-1000ZM2104-2+1GD 2)2020× 0,1-30140020-1000ORDER INFORMATION ZM PUMP WITH BUILT-IN PRIMINGPUMP AND ADJUSTABLE PRESSURE RESTRICTION VALVE 1)PartnumberCircuits4)Flow rate 6)Pump inletPumpinletDrive speed
(outlets)
P1P2
l/minpts/minbarbarmin-1
ZM1035+1GD 2)1010 × 0,4510 × 0.95116201400
ZM2201+1GD 2)2020 × 0,02520 ×0.0521820680ZM2202+1GD 2)2020 × 0,03520 ×0.0741820915ZM2103+1GD 2)2020 × 0,0520 × 0.105 18201360
