What the SRB Pump Does
The SRB hand grease pump is a machine mounted manual pump built for centralized grease distribution. It bolts to the machine frame and feeds distribution lines that carry grease outward to as many as 80 lubrication points. Inside the pump body, two chambers alternate suction and discharge as the lever strokes: one chamber draws grease from the tank while the other pushes it toward the outlet, and the roles swap on the return stroke. That alternating action keeps a steady supply moving into the lines instead of a single pulse per stroke. A low-effort lever lets the operator work the pump at the machine without straining. Choose the J-type for flow-biased duty or the L-type when the layout calls for higher pressure.
Technical Specifications
The table below lists the four SRB models and the shared performance data for the range.
| Model | Type | Pressure | Output | Tank |
| SRB-J7G-2 | J-type | 100 bar | 7.0 mL per stroke | 2 L |
| SRB-J7G-5 | J-type | 100 bar | 7.0 mL per stroke | 5 L |
| SRB-L3.5G-2 | L-type | 200 bar | 3.5 mL per stroke | 2 L |
| SRB-L3.5G-5 | L-type | 200 bar | 3.5 mL per stroke | 5 L |
| Lubrication points | up to 80 | |||
| Grease grades | NLGI 0, 1, 2 | |||
| Grease viscosity range | 68-680 cSt | |||
| Working temperature | -10°C to +40°C | |||
| Outlet port | G1/4″ | |||
| Filler port | M16 x 1.5 | |||
| Pump body | aluminum; plunger hardened steel | |||
| Seals | NBR standard, FKM optional |
J-Type or L-Type
Both personalities share the same body and mounting, so the choice comes down to the layout. The J-type delivers 100 bar and 7.0 mL per stroke, which suits longer lines where flow keeps every point fed. The L-type delivers 200 bar and 3.5 mL per stroke, which suits tighter layouts that need more push through the feed lines. Pick by line length and point count: more points and longer runs favor the flow-biased J-type, while restricted passages favor the pressure-biased L-type. If a single machine still needs point-by-point work, the portable 0.8 kg hand grease pump covers that instead.
Installation and Line Sizing
- Mount the pump at the machine on a rigid bracket within reach of the lever.
- Connect the outlet to the distribution line and check each joint for weeping under pressure.
- Fill through the filler port with the grease grade the points require.
- Prime the lines by stroking the lever until grease moves past the first divider.
- Verify grease at the farthest point before returning the machine to service.
Manual or Powered Greasing
A manual pump stops being enough when the point count outgrows hand duty or when one operator cannot cover every line in a shift. At that stage a pneumatic grease pump takes over the same distribution lines and removes the lever work. For machines that only need occasional attention, the portable point-by-point route remains practical. Either way, the feed lines end at grease nipples for the feed lines, so the pump choice and the nipple choice should be made together.
What Is Supplied
Each order supplies the SRB pump in the chosen model and tank size, with the lever and mounting provisions. Tell us your point count and line layout through request a quote and we confirm the build.
Frequently Asked Questions
What is the difference between J-type and L-type?
The J-type runs at 100 bar and puts out 7.0 mL per stroke. The L-type runs at 200 bar and puts out 3.5 mL per stroke.
Is this pump for grease or oil?
It is a grease pump. It handles the NLGI grades listed above and is not intended for oil service.
Which grease grades can it handle?
It handles NLGI 0, 1 and 2 greases within the listed viscosity range.
How many points can it feed?
It can feed up to 80 lubrication points from one machine mounted unit.
Which tank size should I choose?
Pick the 2 L tank where mounting space is tight. Pick the 5 L tank when you want fewer refills across a shift.
What outlet and filler ports does it use?
The outlet is G1/4″ and the filler port is M16 x 1.5.
How does the dual-chamber principle work?
Two chambers alternate suction and discharge as the lever strokes. One draws grease in while the other pushes it out.
Can one person operate it all shift?
Yes. The low-effort lever keeps the work manageable for a single operator across a normal shift.
When should I move to a pneumatic pump?
Move on when the point count outgrows hand duty or when the lever work no longer fits the shift routine.
Can IsoHiTech confirm the right model before ordering?
Yes. IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, supplies all four SRB models and tank options. Send your point count and line layout to inquiry@isohitech.com or via the quote page for confirmation.
