Heavy Duty Grease Pumps: Professional Equipment for Heavy Applications

A heavy-duty grease pump is defined by four numbers, not by a label: working pressure in the 15–40 MPa class, compatibility with stiff NLGI 2–3 grease, output high enough for multi-point circuits, and a build that survives continuous duty in mines, mills, and construction sites. Below that class, workshop pumps stall on cold NLGI 2 and quit on long hose runs.

The IsoHiTech heavy-duty range spans electric progressive and dual-line pumps from 15 to 40 MPa, plus air-operated drum pumps that move NLGI 2–3 grease straight from 16 to 55-gallon drums. The selection table and model comparison under the grid match a pump to your pressure, grease grade, and site.

How to Choose a Heavy-Duty Grease Pump

Selection factor	What to check
Working pressure	15 MPa suits compact SLR and progressive machine circuits; 31.5–40 MPa is required for dual-line plants and long pipe runs where line losses eat the margin.
Grease grade	NLGI 000–2 covers general models; only pumps rated to NLGI 3 handle stiff greases in cold conditions.
Duty cycle	Intermittent workshop duty vs automated 24/7 lubrication — continuous duty needs a system-class pump with timer control.
Environment	IP55/IP56 enclosures, temperature range (−20 °C to +80 °C on some models), and reservoir protection for dust and washdown sites.
Drive	Electric progressive/dual-line for fixed automation; air-operated drum pumps for mobile plant and yard work — see the electric vs pneumatic comparison.

Heavy-Duty Models Compared

Model	Pressure	Output	Heavy-duty credentials
BMB / BM-B Grease Pump	400 bar (5,800 PSI)	8–30L reservoir options	NLGI up to 3; −20 °C to +80 °C; grease or oil service
BSB Dual Line Grease Pump	40 MPa	120–365 cm³/min	Dual-line plants; 30/60/100L reservoirs; NLGI 000–2 and oils
DRB-P Electric Grease Pump	40 MPa	120 / 235 / 365 mL/min	Single or dual-line; metallurgy, mining and chemical plant duty
DS Electric Grease Pump	15 MPa	25 mL/min	Compact SLR/progressive; 24V DC or 220V AC; injection molding and presses
Air-Operated 55-Gallon Drum Pump	Up to 8,700 PSI	50:1 / 58:1 ratio	NLGI 2–3 from 400 lb drums; follower plate, hose reel, trolley options

For sizing a full automated circuit around these pumps, the heavy machinery lubrication guide covers point counts and cycle times.

Heavy-Duty Grease Pump FAQs

What makes a grease pump “heavy duty”?

Pressure class first (15 MPa minimum, 40 MPa for dual-line), then grease grade support (NLGI 2–3), then build: bigger motors, reinforced pump heads, and reservoirs sized for plant refill intervals. The high-pressure grease pump category sorts the catalog by the first criterion.

Can these pumps handle NLGI 3 grease?

The BM-B is rated to NLGI class 3 and the air-operated drum pumps to NLGI 2–3. Most electric system pumps top out at NLGI 2 — check the model’s grade range before specifying stiff grease, or see the grease pump choosing guide for the matching rules.

Which pump for construction and mining sites?

Mobile sites usually run air-operated drum pumps off a compressor or truck air system, with 16–55 gallon drums and follower plates. Fixed plant — crushers, conveyors, mills — runs electric progressive or dual-line pumps on timers. Both routes are covered in the heavy equipment lubrication guide.

Heavy duty electric or pneumatic?

Electric wins where lubrication is automated and timed; air-operated wins for raw outlet pressure, cold-weather starts, and yard mobility. The electric vs pneumatic grease pump comparison breaks the trade-offs down by site type.

High pressure or high volume — which do I need?

Long lines and stiff grease demand pressure (40 MPa class); many points on short cycles demand volume (365 mL/min class). Dual-line plants need both, which is why the SDRB-N and BSB sit at the top of the range — compare them in the automatic grease lubrication systems category.

Send your grease grade, line length, and point count — IsoHiTech will match the heavy-duty pump and quote.