S-701 Mini Lever Action Grease Gun - 4 oz. / 120 cc
The STAR S-701 Mini Lever Action Grease Gun is a compact manual grease gun engineered for tight space lubrication in automotive, agricultural, marine, motorcycle and DIY applications. Developing up to 6,000 PSI (413 bar) with a 4 oz. (120 cc) bulk capacity and consistent 0.55 gram per stroke output, this portable grease gun reaches fittings that full-size guns cannot.
We at STAR manufacture this small grease gun with a CNC-machined aluminium die cast head, demountable bottom cap, extra-heavy follower spring and non-slip powder-coated body. ISO 9001:2015 certified. 40+ years of manufacturing experience, exporting to 27+ countries with OEM and private label options available.
Rugged Build Quality
- High-tolerance CNC machined aluminium die cast head for precise grease flow at 6,000 PSI sustained pressure.
- Robust barrel with 0.049 inch (1.2 mm) cold-drawn steel wall thickness in compact 31.75 mm diameter.
- Extra-heavy follower spring ensures positive priming and eliminates air lock in small-capacity mini grease guns.
- Rolled threads for fast barrel reassembly after bulk loading or cleaning.
- Machined non-return valve prevents grease backflow and maintains pressure between strokes.
- Knurled barrel provides non-slip grip for one-hand and two-hand operation in tight workshop spaces.
- Non-slip textured powder-coated body resists corrosion and extends service life in garage and marine environments.
- Demountable bottom cap for easy barrel cleaning when switching grease types.
Features / 2-Way Loading Options
This mini lever grease gun accepts two industry-standard loading methods for quick refills in any workshop or field setting:
Bulk Loading4 oz. / 120 cc
Suction Filling
How the S-701 Works
The S-701 Mini uses a simple but effective three-stage mechanism designed for compact reliability:
- Load: Unscrew the demountable bottom cap or barrel, dip the barrel into an open grease pail to bulk-load up to 120 cc (4 oz.), or use a filler pump. The S-701 accepts bulk grease only, not cartridges.
- Prime: Pump the lever 3-5 times to draw grease into the pumping chamber. If grease does not flow, open the bleeder or loosen the head slightly and continue pumping until air escapes and grease flows steadily.
- Dispense: Each lever stroke delivers approximately 0.55 grams of grease (1 oz. per 40 strokes). Connect the 4 inch rigid steel extension or 10 inch flexible hose to the zerk fitting and pump until fresh grease appears at the bearing seal.
The mini size and 6,000 PSI pressure make the S-701 ideal for small bearings, tie rod ends, motorcycle chassis, lawn mower fittings, ATV pivots, marine trailers and any location where a full-size grease gun cannot reach.
| Parameter | Value |
|---|---|
| Model | S-701 |
| Type | Manual Mini Lever Action Grease Gun |
| Mechanism | Lever Type (Hand Operated) |
| Delivers | 0.55 g / Stroke (0.8 oz. / 40 Strokes) |
| Pressure Developed | 6,000 PSI (413 bar / 41 MPa) |
| Filling Options | Bulk, Suction (2-way) |
| Cartridge Capacity | Not applicable (bulk fill only) |
| Bulk Capacity | 120 cc (4 oz.) |
| Barrel Diameter (Ø) | 31.75 mm / 1.25 inch |
| Barrel Wall Thickness | 0.049 inch / 1.2 mm cold-drawn steel |
| Head Material | CNC-machined aluminium die cast |
| Body Finish | Non-slip textured powder coating |
| Thread Options | 1/8 BSPT / 1/8 NPT / M10 x 1 / Custom |
| Extension / Hose Size | 4 inch (100 mm) Steel Extension / 10 inch (250 mm) Flexible Hose / Both |
| Coupler | Hydraulic coupler (standard), 4-jaw with ball check (optional) |
| Bottom Cap | Demountable for easy cleaning |
| Operating Temperature | -10 to +80 °C |
| Country of Origin | India (Made in Ludhiana) |
| Certifications | ISO 9001:2015, CE, RoHS compliant |
| HS Code | 8205 |
| Warranty | 1 year against manufacturing defects |
| OEM / Private Label | Available (MOQ applies) |
Every S-701 ships ready to use with essential accessories included. Three compact kit configurations to match your setup and application.
4 inch (100 mm) Steel Extension
Hydraulic Coupler
Instruction Manual
10 inch (250 mm) Flexible Hose
Hydraulic Coupler
Instruction Manual
4 inch Steel Extension
10 inch Flexible Hose
Hydraulic Coupler
Instruction Manual
R = Rigid Extension
F = Flexible Hose
RF = Fixed Rigid Extension & Flexible Hose both included
Every kit is fully customizable. Additional couplers, connectors, pointed nozzles, or any other accessories can be included in the box as per your requirement.
Contact us for custom kit configurations.
Understanding what a mini grease gun delivers in the field helps you choose the right tool. Here is what each major S-701 spec means for practical lubrication work:
The S-701 is engineered for compact lubrication across a wide range of light-to-medium duty industries. Its small size and 6,000 PSI rating make it ideal for spaces and applications where portability matters most.
Other Mini Grease Guns from STAR
Compatible Accessories
Related Product Categories
Buying Guide: When to Choose the S-701
Choosing between a mini and standard grease gun depends on where and how you work. Here is how the S-701 compares to alternatives:
S-701 vs Standard Size Lever Grease Guns
The S-701 is about half the size of a standard 14 oz. grease gun, making it the right choice when you need to reach fittings in tight spaces. Full-size guns like the S-707 offer higher pressure (12,000 PSI) and more capacity (14 oz.) but are too bulky for motorcycles, ATVs, engine bays, and classic car restoration work. The S-701's 6,000 PSI is enough for chassis lubrication on most vehicles and equipment.
S-701 vs Pistol Grip Mini Grease Guns
Mini pistol grip grease guns offer one-handed trigger operation but typically cap around 3,000-5,000 PSI. The S-701 delivers higher 6,000 PSI using a two-handed lever design, which provides more mechanical advantage for pushing grease through slightly resistant fittings. Choose pistol grip minis for quick single-fitting jobs where one hand needs to be free. Choose the S-701 when you need more pressure, better control, or two-handed operation for sustained greasing sessions.
S-701 vs S-703 Mini Models
The S-701 (120 cc / 4 oz.) is the smallest in STAR's mini lever grease gun range. If you need slightly more capacity without going full-size, consider the S-703 (200 cc / 8 oz.), or S-703E slim barrel for even tighter clearances. For heavy-duty mini applications, the S-703S offers steel head construction.
S-701 vs Battery Powered Mini Grease Guns
Battery-powered mini grease guns cost 5-8x more than the S-701, require charging, and fail in wet or dusty environments. For most DIY users, small workshops, motorcycle owners and occasional-use applications, the manual S-701 offers better total cost of ownership with no batteries to replace and no electronics to fail. Battery guns suit service technicians with many daily greasings on clean equipment.
OEM and Bulk Buyers
For distributors, importers and OEM partners, the S-701 offers strong margins on a high-volume SKU popular in motorcycle accessories, automotive parts stores, and hardware chains. We at STAR provide custom branding, private label packaging, modified specifications, and MOQ-friendly bulk pricing. Contact our export team for partnership details.
Frequently Asked Questions: Mini Lever Action Grease Gun 4 oz
What is a mini lever action grease gun used for?
A mini lever action grease gun is a compact manual lubrication tool used for greasing small bearings, chassis fittings, tie rod ends and pivot points in tight spaces where full-size grease guns cannot reach. The S-701 is the smallest in the STAR mini range (4 oz. / 120 cc, 31.75 mm barrel) and is ideal for motorcycles, ATVs, bicycles, small tractors, trailers, classic cars, lawn equipment, and OEM toolkits bundled with rotavators and agricultural implements. Its 6,000 PSI pressure handles sealed bearings despite the mini form factor.
What is the maximum PSI for a mini grease gun?
Consumer mini grease guns typically cap at 3,000-4,000 PSI; pro-grade minis like the STAR S-701 reach 6,000 PSI (413 bar). Higher pressure ratings on mini guns are limited by the small barrel diameter and aluminium die cast heads (versus steel heads on industrial guns). The S-701's 6,000 PSI is double the pressure of generic hardware store mini guns, which is why it works where they fail on crusted zerks and sealed bearings. For 12,000 PSI, step up to the full-size S-707 industrial gun.
How many strokes does it take to deliver 1 oz of grease?
The S-701 delivers approximately 1 oz. (22 grams) per 40 strokes, which works out to 0.55 grams per stroke. This finer per-stroke output lets operators dose precisely on small fittings where over-greasing can damage seals. For typical chassis fittings, 3-5 strokes delivers the correct volume; larger bearings may need 10-15 strokes. Service manuals specify grease volume in grams, so stroke-counting is more accurate than pumping by feel.
How do you load a mini grease gun with bulk grease?
To bulk-load the S-701: (1) unscrew the demountable bottom cap, (2) retract the plunger rod fully, (3) dip the open 31.75 mm barrel into an open grease pail, (4) press downward while slowly releasing the plunger so grease fills the 120 cc barrel without trapping air. Wipe threads clean, reattach, and prime. The S-701's narrow barrel dips into small grease containers but takes slightly longer to bulk-fill than wider mini guns. Slow plunger release is the key to avoiding air locks.
How do I know if my grease gun is fully primed?
A fully primed mini grease gun produces a steady stream of fresh grease from the coupler tip with firm lever resistance on each stroke. A partially primed gun produces intermittent flow, soft lever feel, or air spitting from the coupler. On the S-701, after loading pump the lever 3-5 times; grease should flow within 5-10 strokes. If not, loosen the head slightly to release trapped air, then retighten and continue pumping until grease flows steadily. The extra-heavy follower spring minimizes priming problems common on cheap mini guns.
Can I use a mini grease gun on a motorcycle?
Yes, the S-701 is the preferred tool for motorcycle maintenance because its 31.75 mm barrel reaches fittings that full-size grease guns physically cannot access. Common motorcycle applications: swingarm pivots, shock linkage bearings, steering head bearings, sidestand pivots, chain adjusters and wheel bearings (external zerk types). The 6,000 PSI pressure handles sealed motorcycle bearings; the optional 10 inch flexible hose reaches pivots hidden behind exhausts, fairings and frame rails.
Can I use a mini grease gun for Bearing Buddy trailer spindle caps?
Yes, the S-701 works with Bearing Buddy style spring-loaded spindle caps used on boat trailers and utility trailers. Pump slowly, 1 stroke at a time, watching the Bearing Buddy's blue indicator disc or spring-loaded piston. Stop pumping when the piston moves forward slightly; this means the hub is full. Over-pumping forces the rear grease seal, contaminating the drum brake shoes with grease. For repacking exposed wheel bearings (not Bearing Buddy equipped), hand-pack the bearing before reassembly rather than gun-pumping.
Can I use marine grease in a mini grease gun?
Yes, the S-701 handles NLGI 2 marine-grade grease (calcium sulfonate, aluminum complex, or lithium complex) without any modification. Use marine grease for boat trailer spindle hubs, outboard tilt mechanisms, trailer winches and any fitting exposed to water. Never mix marine grease with residual automotive lithium grease already in the gun; thickeners can react and form hard deposits. If switching from automotive to marine grease, disassemble the barrel, solvent-flush, dry, and reload with marine grease.
Why is my grease gun air locked and how do I fix it?
Air lock happens when air enters the barrel during bulk loading, preventing the pump from priming. To fix on the S-701: (1) loosen the head 1/4 turn while pumping the lever until grease oozes out, then retighten; (2) if that fails, disassemble the barrel, pack grease manually against the follower plate to eliminate the air pocket, reassemble and re-prime; (3) prevent future air locks by releasing the plunger rod slowly during bulk loading, and by tapping the gun on a bench after loading to settle grease against the follower.
What causes a lever grease gun to lose its prime?
Prime loss in a lever grease gun has four common causes: empty barrel (grease exhausted), worn plunger seal (grease bypassing the plunger), loose head connection allowing air ingress, or an incompatible grease mixture causing thickener separation. Diagnostic order on the S-701: (1) check if the 120 cc barrel is empty by pulling the plunger rod back; (2) confirm the head is fully threaded tight; (3) inspect the plunger rod seal for wear and replace if damaged; (4) verify grease has not separated or formed deposits. Replacement seals are available as spare parts.
Can I mix different types of grease in the same grease gun?
No, never mix incompatible grease thickeners without thorough cleaning between. Lithium, calcium, aluminum complex, polyurea and clay thickeners can react chemically and form hard deposits that clog the gun and reduce lubrication effectiveness. To switch safely in the S-701: empty residual grease, disassemble via the demountable bottom cap, wipe and solvent-flush the interior, dry completely, lightly re-grease new o-rings, reassemble and load the new grease. Workshops should keep separate labeled grease guns per grease type.
How often should I clean my grease gun?
Clean the S-701 every 6 months for occasional use, every 2-3 months for weekly use, or whenever you switch grease types. The demountable bottom cap makes cleaning easy: unscrew the barrel, wipe out old grease with a clean rag, flush with solvent if hardened, dry completely, lightly re-grease the plunger seal and o-rings with fresh grease, reassemble. Regular cleaning extends follower spring life, prevents priming issues, and keeps the non-return valve seating properly.
Should I store a grease gun horizontally or vertically?
Store the S-701 horizontally (laying flat) with the plunger rod disengaged (released, not locked back in the side slot). Horizontal storage prevents oil bleed (the oil separating from the grease thickener) which can happen with nozzle-down vertical storage over months. Disengaging the plunger releases follower spring tension, extending spring life. Store between 5°C and 35°C in a clean dry area. For storage over 3 months, wipe exterior, remove the coupler, and cap the outlet.
What safety precautions should I follow when using a grease gun?
Always wear safety glasses and nitrile gloves, and never place your hand or body in front of the coupler tip or a pressurized hose. A 6,000 PSI grease injection injury is a medical emergency: grease injected under the skin can cause severe tissue damage, infection or amputation even from a tiny puncture wound. If injection happens, go to an emergency room immediately and tell staff it is a high-pressure grease injection injury; small wounds hide extensive internal damage. Inspect the hose before every use for cracks, bulges or kinks. Never bypass the coupler by pressing the gun tip directly against skin or a seal.
Why Global Buyers Trust STAR
We at STAR have been manufacturing mini and full-size lever action grease guns in our ISO 9001:2015 certified Ludhiana facility since 1980. Our products are shipped worldwide with full export documentation, multilingual manuals, and dedicated OEM support.