LSG Hand Grease Pump
The LSG hand grease pump is a compact, lever-operated manual lubricator for small centralized grease systems. Each stroke delivers 1 ml of grease at up to 15 MPa (150 bar)—enough to operate positive injector (PDI) manifolds or charge a progressive (PRG) divider on machine tools, packaging equipment, and light industrial hosts.
Model summary
- LSG-1×0.4 — 0.4 L reservoir, 1.9 kg (P.N. 20601 PDI / 20602 PRG)
- LSG-1×1 — 1.0 L reservoir, 2.7 kg (P.N. 20603 PDI / 20604 PRG)
- Pressure: 15 MPa rated
- Discharge: 1 ml per stroke (all models)
- Grease: NLGI #000, #00, #0 (semi-fluid to soft grease)
- Outlet threads: M8×1 or M10×1 (specify at order)
- Construction: Die-cast body, PC transparent reservoir
This page covers LSG selection and ordering. For 5–15 L barrel lever pumps, see the manual grease barrel pump hub. For oil hand pumps, see Y8 high-pressure hand pump. For heavy single-line grease, see heavy-duty DA / SG hand pump.
- LSG hand grease pump — full model table
- PDI & PRG Compatibility
| Model | P.N. | Pressure (MPa) | Discharge (ml/stroke) | Reservoir (L) | System | Grease range | Weight (kg) |
| LSG-1×0.4 | 20601 | 15 | 1 | 0.4 | PDI | NLGI #000 ~ #0 | 1.9 |
| 20602 | 0.4 | PRG | |||||
| LSG-1×1 | 20603 | 1.0 | PDI | 2.7 | |||
| 20604 | 1.0 | PRG |
Ordering note: Optional outlet threads M8×1 and M10×1. Specify outlet and reservoir at order — e.g. LSG-1×0.4, P.N. 20601, M8×1.
Product video
PDI variant (20601, 20603)
- Use with positive-displacement injectors or injector manifolds
- Pump must reach injector opening pressure each cycle; LSG rated 15 MPa
- Soft grease NLGI #000–#0 only
PRG variant (20602, 20604)
- Use with progressive divider blocks (DJF, SSV, etc.) — see grease manifold block
- One blocked progressive point can stall the sequence — monitor cycle indicator on the block
- Typical on small hosts where manual pump supplements or replaces electric pump during setup
Not for: dual-line DW/ZVB systems, single-line SLR oil circuits, or NLGI #2+ grease without engineering approval.
LSG Model Data & Materials
| Model | P.N. | System | Pressure (MPa) | ml/stroke | Reservoir (L) | Grease | Weight (kg) |
|---|---|---|---|---|---|---|---|
| LSG-1×0.4 | 20601 | PDI | 15 | 1 | 0.4 | NLGI #000 ~ #0 | 1.9 |
| 20602 | PRG (progressive) | 0.4 | |||||
| LSG-1×1 | 20603 | PDI | 1.0 | 2.7 | |||
| 20604 | PRG (progressive) | 1.0 |
Materials & construction
- Central body: die-cast metal housing for rigidity and heat dissipation
- Reservoir tank: PC (polycarbonate) for visible level monitoring
- Optional outlet: M8×1 or M10×1 — specify at order
Watch the LSG Grease Pump Video on the Parameter tab for handle operation and typical mounting.
Related Product
What Is the LSG Hand Grease Pump?
The LSG is a machine-mounted manual grease pump with an integrated reservoir and piston handle. It replaces periodic greasing with a hand-cycled centralized circuit—common on small CNC machines, injection molding hosts, and equipment where electric pumps are optional or used as backup.
IsoHiTech supplies LSG in two reservoir sizes and two system variants (PDI or PRG) per model. Order the correct part number so downstream metering components match your architecture.
Where LSG Fits: PDI vs PRG (Progressive)
PDI (positive displacement injector) — P.N. 20601 / 20603
The pump builds line pressure until each injector fires and delivers a fixed dose. LSG at 15 MPa suits soft-grease injector circuits with NLGI #000–#0. Pair with manifold or single injectors from our manifold distributors range.
PRG (progressive grease system) — P.N. 20602 / 20604
The pump sends grease to a progressive divider block (DJF, SSV, or similar). Sections meter in sequence; one blocked point can stop the progressive chain. LSG is used for manual or backup fill on small progressive layouts. See grease manifold block selection and grease distributor block hub.
Typical layout:
- LSG hand pump — manual pressure source
- Main line — 4 mm or 6 mm tubing (lubrication pipe)
- Metering — injectors (PDI) or progressive block (PRG)
- Lubrication points — bearings, slides, cams
LSG vs Other Manual Pumps
Model Medium Max pressure ml/stroke Reservoir System Best for LSG-1×0.4 / 1×1 (this page) Grease NLGI 000–0 15 MPa 1 ml 0.4–1 L PDI / PRG Compact machine-mounted grease Y8-6.3×0.6 Oil VG 32–68 2 MPa 6 ml 600 ml PDI / SLR oil Oil circuits — not grease SG / DA heavy-duty Grease NLGI 000–2 7 MPa 8 ml 3.5 L Single-line Mining, steel, large reservoirs Barrel hand pumps Grease in drum Varies High volume 5–15 L Workshop Bulk fill — see hand-pump hub Do not use Y8 for grease or LSG for barrel transfer—reservoir size, pressure, and outlet design differ.
How to Select and Order LSG (5 Steps)
Step 1 — Confirm lubricant. Use NLGI #000, #00, or #0 only. Stiffer grease (#1, #2) will increase handle effort and may not meter reliably in small PDI/PRG circuits.
Step 2 — Choose system type. Order 20601 / 20603 for PDI injector systems; 20602 / 20604 for progressive PRG systems.
Step 3 — Choose reservoir. LSG-1×0.4 (0.4 L) for tight mounting; LSG-1×1 (1.0 L) for longer intervals between refills.
Step 4 — Specify outlet thread. Standard options M8×1 or M10×1—state on PO (example: LSG-1×0.4, P.N. 20601, M8×1).
Step 5 — Size downstream components. Confirm injectors or progressive block are rated for 15 MPa and soft grease. Send point count and tubing length to IsoHiTech for BOM review.
Installation & Operation Notes
- Mounting: Fix distance 70 mm, hole size 10 mm (both dimensions)—see dimension drawing on page or request CAD.
- Refill: Add grease through the grease nipple on the reservoir; use clean NLGI #000–#0 product only.
- First start: Cycle the handle until main-line pressure builds and injectors or progressive indicator moves; purge air from new lines before connecting bearings.
- PDI vs PRG on same machine: Never mix architectures on one pump outlet without engineering review—they use different metering devices.
Related Products & Guides
- Grease pump hub (electric and automatic options)
- Automatic lubrication overview
- Positive injector systems
- Progressive lubrication systems
- Y8 hand pump (oil)
Before you buy: read our complete guide to grease pumps.
All LSG models are rated for 15 MPa (150 bar) maximum working pressure with 1 ml discharge per handle stroke. Actual line pressure depends on injector settings, progressive block condition, grease grade, and tubing length.
Both are LSG-1×0.4 (0.4 L reservoir). 20601 is configured for PDI (injector) systems; 20602 is for PRG (progressive) systems. The pump body is the same size—order the part number that matches your downstream metering architecture. The 1.0 L models use 20603 (PDI) and 20604 (PRG).
Use NLGI #000, #00, or #0 grease only. Fill through the grease nipple on the reservoir with clean product. Do not use NLGI #1 or #2 in this pump without confirming injector and line compatibility—handle effort and flow may be insufficient.
Standard mounting uses 70 mm fix distance (both dimensions) and 10 mm hole size. Refer to the dimension drawing on this page or contact IsoHiTech for CAD. Allow clearance above the reservoir for refill access.
The central body is die-cast metal. The reservoir tank is PC (polycarbonate) for visibility of grease level. Outlet fittings are available in M8×1 or M10×1 threads per your order specification.
The URL hand-pump covers manual grease barrel pumps (5 L, 10 L, 15 L workshop dispensers). This page (/hand-grease-pump/) is the LSG machine-mounted pump (0.4–1 L) for PDI/PRG centralized circuits at 15 MPa. They serve different applications—do not substitute one for the other.
No. Y8 is an oil pump (2 MPa, 6 ml/stroke) for PDI/SLR oil systems. LSG is a grease pump (15 MPa, 1 ml/stroke). Match pump type to lubricant and system design.