GM Type Grease Lubrication Pump
Also sold as the GM Type Motor-Driven Grease Lubrication Pump
The GM Type Motor-Driven Grease Lubrication Pump is engineered for heavy-duty automatic grease lubrication applications. Motor-driven for consistent and reliable operation, it provides continuous metered grease delivery to all machine points from a 2L or 4L reservoir. It pairs with 35-type pressurised volume distributors, which raise system pressure to 35 kgf/cm² for complete grease lubrication, with a pressure switch action pressure of 30 kgf/cm² for that configuration. Equipped with a 24VDC grease level switch and pressure switch for system monitoring, it integrates with PLC or machine control systems via standard terminal connections.
How it works
A special alloy-steel gear set gives stable output pressure and low noise at 90 W, nominal 3.5 MPa and maximum 5.0 MPa. That is enough to cycle a 35 type pressure volume distributor or a progressive distributor, feeding each point in dose or in sequence.
A grease level sensor detects inadequate grease and alarms without external wiring. A point-action switch lubricates the machine at any moment between cycles. With a pressure switch fitted the pump provides a pressure signal for automatic control from the main unit; with the automatic pressure take-off device fitted it forms a complete moderate-pressure circuit with the 35 type distributor.
Specifications
Model matrix by order code
The NK-3 digital display timer is available on the 4 L lubrication pump only.
Dimensions
Dimensions in millimetres. Confirm critical dimensions with us before machining a mounting.
How to read the order code
- Discharge capacity per minute
- 2 = 100–200 cc · 3 = 200–300 cc · 4 = 300–400 cc
- Number of motor poles
- 2 = 2P
- Timer module
- 0 = without dual-timer module · 1 = built-in dual-timer module · 3 = NK-3 with digital display (4 L only)
- Motor type
- 1 = single-phase 100 V · 2 = single-phase 220 V · 3 = three-phase 200 V · 4 = three-phase 380 V
- Reservoir volume
- 2 = 2 L · 4 = 4 L
- Pressure switch action pressure
- 00 = without pressure switch · 30 = 30 kgf/cm²
- Pressure take-off mechanism
- X = built-in, for dosing distributors · T = without, for resist-type
- Suffixes
- S = with capacitance-type level sensor (blank = without level sensor)
Before you order
- Three-phase 380 V. Confirm the supply at the machine before ordering.
- X and T builds are not interchangeable: X for dosing distributors, T for resist-type.
- NLGI 00# / 000# grease only.
Warranty
One year against manufacturing defect from date of invoice.
How it pairs
The GM Type Grease Lubrication Pump is commonly specified alongside the 35 Type Volumetric Distributor, the SD2 Type Progressive Grease Distributor, and the NKGH Type Manual Grease Pump. That is the same recommendation carried on its own datasheet, not a generic same-category suggestion.
Used on
Industry applications
Tie bars, toggle pins and platens on horizontal and vertical machines: oil or semi-fluid grease, metered per point and re-metered every cycle.
Ways, ball screws and LM guides on machining centres, turning centres and routers: metered oil to every point, and a wireless handwheel for the setter.
Rolling mills, forging presses, mining and material handling plant, excavators and cranes: points that are hard to reach and easy to forget.
Compatible with
Related reading
NLGI 2 belongs on a 30 MPa progressive circuit, not in a GM or 35-type reservoir. How the three grease pressure classes decide the grade, and what mixing them costs.
Oil or semi-fluid grease on the clamp, why those points want pressure-volumetric metering, and the AMAG pump pairings that match a 35-type action window.
How series-progressive distributors and a simple PLC pattern turn lubrication from an act of faith into a checkable interlock, with SD-series details.