How Manual Grease Barrel Pumps Work
Manual grease barrel pumps use a lever or piston to build pressure in a small integrated reservoir or suction tube from a grease drum. Each stroke forces grease through a delivery hose to a control valve, coupler, or zerk adapter—ideal for topping up centralized systems, filling small machine reservoirs, and workshop lubrication where electric or pneumatic pumps are not required.
IsoHiTech barrel hand pump range (this hub)
- 5 L hand pump — compact for mobile service carts and light-duty fill
- 10 L hand pump — balanced capacity for general workshop use
- 15 L hand pump — higher volume per session for fleet or plant maintenance bays
This URL (/hand-pump/) covers barrel / workshop lever pumps. For machine-mounted centralized grease at 15 MPa, see the LSG hand grease pump. For oil PDI/SLR circuits, see Y8 high-pressure hand pump. Automatic sources: grease pump hub.
- Our Products
- Key Parameters Of Manual Grease Barrel Pump
| Model | Capacity | Package Information | Weight (for 2 cartons) | Package Dimensions |
|---|---|---|---|---|
| 5L Hand Pump | 5L | 2 pcs/carton | 8 kg | 42 cm x 38 cm x 18 cm / 2 pcs |
| 10L Hand Pump | 10L | 2 pcs/carton | 8 kg | 57 cm x 38 cm x 18 cm / 2 pcs |
| 15L Hand Pump | 15L | 2 pcs/carton | 8 kg | 57 cm x 50 cm x 15 cm / 2 pcs |
| Parameter | Description |
|---|---|
| Max Flow Rate | Maximum amount of grease dispensed per cycle or minute (e.g., 30 lpm to 240 g) |
| Max Head | The maximum height the pump can push grease, measured in meters (m) |
| Max Temperature | The highest operating temperature for the grease, typically 60°C to 120°C |
| Max Viscosity | Maximum viscosity of grease handled, measured in centipoise (cP) |
| Solids Passage | Maximum size of solid particles that can pass through, measured in millimeters (mm) |
| Operating Pressure | Effective operating pressure, typically ranging from 20 bar to over 400 bar |
| Drum Capacity Compatibility | Sizes of drums the pump can accommodate (e.g., 12 kg to 220 kg) |
| Drive Options | Types of operation: manual, pneumatic, or electric |
| Compression Ratio | Ratio indicating pressure generation relative to input force (e.g., 50:1) |
| Hose Length and Size | Specifications for delivery hose length and diameter |
Types of Manual Grease Pumps
Manual grease pumps fall into three common families. Match the family to your job—workshop bulk transfer, machine-mounted backup, or high-pressure injector fill.
Hand lever barrel pumps (this page)
Operated from a lever on a 5–15 L integrated tank or drum follower setup. They move high volume per minute for filling reservoirs, purging air from main lines, and field service. Pressure varies by model; they are not rated for continuous PDI injector cycling like LSG.
Bucket and drum pumps
Designed to draw grease directly from standard drums (12–220 kg) with a follower plate. Common in plant maintenance bays where operators refill multiple machines from one drum. Use clean grease and a follower plate in cold weather to avoid air pockets.
Pistol-grip and compact models
Handheld units for detail greasing at individual zerks. Convenient for mechanics; different from barrel hub models listed in the Tabs table above.
Machine-mounted manual pumps (not this page)
- LSG hand grease pump — 0.4–1 L reservoir, 15 MPa, PDI / PRG grease systems
- Y8 hand pump — oil, 2 MPa, PDI / SLR
- DA / SG heavy-duty hand pump — large single-line grease, mining / steel duty
Advantages of Manual Grease Barrel Pumps
- Controlled delivery — operator controls volume per stroke; reduces over-greasing vs unregulated guns
- Portability — 5 L / 10 L / 15 L cartons suit service trucks and shop floors (see Tabs for weights and dimensions)
- Cost-effective — lower capital cost than electric or pneumatic pumps; no compressed air or wiring
- Backup fill — charge a centralized system when the automatic pump is offline
Applications
- Automotive & fleet — chassis, U-joints, fifth wheels; pair with automatic grease pumps on trailers where fitted
- Industrial equipment — purge and fill progressive or dual-line headers before commissioning
- Agricultural machinery — field service on tractors and harvesters between automatic system service intervals
- Workshop bulk transfer — move NLGI #0–#2 grease from drum to smaller reservoirs or hand carts
Manual Grease Barrel Pump Selection Guide
Barrel hub vs LSG vs Y8 — quick comparison
| Page / model | URL | Medium | Typical reservoir | Pressure class | Primary use |
|---|---|---|---|---|---|
| Barrel hand pumps (this hub) | /hand-pump/ | Grease NLGI ~0–2 | 5 L / 10 L / 15 L | Workshop fill | Drum transfer, system top-up, field service |
| LSG | /hand-grease-pump/ | Grease NLGI 000–0 | 0.4–1 L | 15 MPa | Machine-mounted PDI / PRG |
| Y8 | /high-pressure-hand-pump/ | Oil VG 32–68 | 600 ml | 2 MPa | Machine-mounted PDI / SLR oil |
| DA / SG | /heavy-duty-hand-pump/ | Grease NLGI 000–2 | 3.5 L | 7 MPa | Heavy single-line grease |
Do not substitute a barrel lever pump for LSG on a 15 MPa injector circuit—flow rate, pressure hold, and mounting differ. Use barrel pumps to fill reservoirs or prime lines; use LSG or automatic pumps for ongoing centralized delivery.
How a barrel lever pump works
- Intake — piston or lever draws grease from the internal tank or drum through a suction tube; follower plate keeps the drum surface clean in cold or high-viscosity service.
- Pressure stroke — lever motion compresses grease in the pump head; check valves prevent backflow.
- Delivery — grease exits through a hose to a gun, control valve, or quick coupler into the machine circuit or zerk.
- Relief / stop — release lever; store with hose capped to keep contamination out.
Five-step selection (5 L vs 10 L vs 15 L)
- Define job — workshop-only fill, mobile fleet service, or backup for a centralized system?
- Choose capacity — 5 L for light mobile use; 10 L general workshop; 15 L when fewer refills per shift matter (see Tabs for carton weight and dimensions).
- Match grease grade — most barrel pumps handle lithium and synthetic greases to NLGI #2; confirm pump spec if using #3 or fibrous grease.
- Plan hose and coupler — length and diameter affect effective head; see lubrication pipe and accessories.
- Integrate with automatic systems — after manual fill, run the electric or pneumatic pump to verify progressive or dual-line cycles; see progressive and dual-line guides.
Operation and maintenance
- Prime the pump after long storage—cycle slowly until grease flows without air bubbles.
- In cold ambient, warm grease or use a follower plate; high-viscosity NLGI #2 may need slower strokes.
- Inspect hose, coupler, and pump head seals for leaks; overtightening zerks can damage threads.
- Keep drum cover and follower plate clean—contamination is the main cause of blocked downstream manifold blocks.
Related products and guides
- LSG hand grease pump (machine-mounted, 15 MPa)
- Grease pump hub — automatic pumps
- Positive injector (PDI) systems
- Progressive (PRG) systems
- Lubrication installation & service
- Bearing lubrication calculator
A manual grease barrel pump dispenses grease from a small integrated tank (5 L, 10 L, or 15 L on this hub) or from a standard grease drum using a lever or piston. It is used for workshop fill, field service, and topping up centralized lubrication systems. It is not the same as the LSG machine-mounted pump.
The operator presses a lever or piston, building pressure that forces grease through a hose to a control valve, coupler, or zerk. On barrel models, a follower plate on the drum reduces air ingestion when pumping high-viscosity grease.
Most barrel hand pumps accept lithium, calcium, and synthetic greases to NLGI #2. Semi-fluid greases (NLGI #00–#0) are easier in cold service. Match grade to downstream automatic pump and injector ratings.
Workshop barrel lever pumps are optimized for volume transfer, not sustained 15 MPa injector duty. Many industrial hand units can reach 400 bar (5,800 psi) peak in spec tables; actual line pressure depends on hose, coupler, and point resistance. For 15 MPa PDI/PRG on-machine, use LSG.
Check hose and head seals, tighten fittings, clean the follower plate and drum rim, and store with caps on couplers. Refer to the pump nameplate for seal kits and grease grade limits.
Yes. Use a follower plate, keep drum indoors before service if possible, and select a lower NLGI grade or seasonal grease. Pump slowly until flow is consistent.
Grease dispenses without sputtering or air gaps. If flow is intermittent, re-prime: submerge suction, cycle slowly, bleed air at the hose end.
Check for blocked hose or frozen grease, verify follower plate seal on the drum, inspect check valves, and confirm the suction tube reaches the grease surface.
Wear oil-resistant gloves and eye protection. Keep ignition sources away from leaks. Never exceed rated pressure on couplers; grease injection injuries from high-pressure guns are a serious hazard—use correct fittings and avoid skin contact with pressurized streams.
For 5 L / 10 L / 15 L workshop models, use this hub’s Tabs table. For machine-mounted PDI or progressive grease, choose LSG. For oil systems, choose Y8. For automatic plants, start at the grease pump hub.