Grease Dispenser Buckets With Wheels/Trolley

Frequently Asked Questions

What is a grease bucket pump with wheels and when should I choose one?

A grease bucket pump with wheels is a hand-operated grease dispenser mounted on a steel trolley for mobile service. Choose the wheeled version when your equipment is spread across a yard, factory floor or multi-bay depot and you need to bring the grease supply to each machine rather than carrying it. The S-300T series uses the same CNC-machined pump as the stationary version (4,000 PSI, 3-position variable handle) but adds a powder-coated steel trolley with lockable castors for convenient movement.

What pressure does the wheeled grease bucket pump generate?

The S-300T series generates identical pressure to the stationary version: up to 4,000 PSI (275 bar) at the high pressure handle setting. The trolley does not affect pump performance. All three variable positions remain available: 4,000 PSI / 4 g per stroke, 3,000 PSI / 7 g per stroke, and 2,000 PSI / 9 g per stroke. The toe-lock castors provide a stable platform for applying full lever force at the high pressure setting.

How much grease does the wheeled bucket pump deliver per stroke?

Delivery ranges from 4 g to 9 g per stroke, identical to the stationary S-300 series. At high volume (2,000 PSI), the pump delivers 9 g per stroke for rapid filling of grease guns or large open bearings. At high pressure (4,000 PSI), output is 4 g per stroke with concentrated force for stubborn fittings. The trolley adds mobility without changing the pump's hydraulic performance.

How do I lock the wheels on the grease pump trolley during operation?

Press the toe-lock lever on each rear castor with your foot to engage the brake. The toe lock prevents the trolley from rolling when you apply lever force during high-pressure pumping. Always engage both rear castor locks before operating the pump. To release, press the opposite side of the toe-lock lever. The front wheels are fixed-direction and do not require locking.

How do I prime the wheeled bucket pump after moving to a new location?

No re-priming is needed between moves; the spring-loaded follower plate maintains grease contact with the pump inlet during transport. The follower plate rides on the grease surface continuously, so rolling the trolley between machines does not introduce air into the system. Simply attach the coupler and pump. Re-priming is only needed after a fresh bucket fill or if the pump has been stored empty for an extended period.

Can I roll this grease pump across rough terrain on a construction site?

Yes, the polyurethane front wheels and swivel rear castors handle concrete, asphalt, compacted gravel and steel grating. For very rough or muddy surfaces, the larger-capacity models (S-315T and above) have slightly larger wheel diameters that improve rolling performance. Avoid deep gravel, sand or soft mud where any wheeled equipment would sink. On paved or compacted surfaces, the trolley rolls smoothly even when fully loaded with 30 kg of grease.

Can I use the wheeled bucket pump to service an entire fleet without refilling?

Yes, with the correct capacity selection. A typical excavator requires 500-800 g of grease per full service (all fittings). The S-330T (30 kg) therefore services 37-60 machines on a single fill. For mixed fleets with lighter equipment (trucks, trailers with 10-20 fittings each), a 10 kg bucket (S-310T) handles 20-30 vehicles. Match bucket capacity to your daily round to avoid mid-shift refilling.

What NLGI grade grease is compatible with the wheeled bucket pump?

NLGI 1, 2, and 3 greases all work with the S-300T series pump mechanism. NLGI 2 lithium complex is the most common workshop grease and flows easily at all handle settings. NLGI 3 (firmer consistency) requires slightly more lever effort but delivers at full rated pressure. NLGI 1 (softer) flows freely and is typical for cold-weather applications or centralised systems. The pump handles lithium, calcium sulphonate, polyurea and moly-fortified greases.

Why is my wheeled grease pump losing pressure during operation?

Check three points in order: piston seal, non-return valve, and hose connections. A worn piston seal allows grease to bypass the piston rather than building pressure; inspect and replace the O-ring or cup seal from the repair kit. A scored non-return valve ball or seat lets pressure bleed back between strokes; clean with solvent or replace the ball. Loose hose fittings bleed pressure before it reaches the coupler; tighten all connections with a spanner. The trolley itself does not affect pressure; the fault is always in the pump or hose assembly.

How do I troubleshoot a wheeled bucket pump that stops dispensing mid-round?

The most likely cause is the follower plate lifting off the grease surface during transport over bumps. Open the cover and check that the follower plate is seated flat on the grease. If it has tilted or lifted, press it back down firmly. If the bucket is nearly empty, the plate may have reached the bottom and lost suction; refill with fresh grease. Other causes include a clogged coupler nozzle (remove and clean) or a kinked hose (straighten the hose run between trolley and fitting).

Can I mix different grease types when refilling the wheeled bucket pump?

Avoid mixing incompatible greases; the consequences range from softening (loss of seal) to hardening (pump blockage). Lithium-complex greases are compatible with each other. Calcium sulphonate and lithium should not be mixed. Polyurea is incompatible with most other base types. When switching grease types, flush the entire system (bucket, follower plate, hose, coupler) with petroleum-based solvent before refilling. Pump solvent through until it exits clear at the coupler.

How do I maintain the wheels and castors on the grease pump trolley?

Inspect wheels monthly for grease build-up, debris and flat spots. Wipe polyurethane wheels with a solvent-dampened rag to remove accumulated grease that reduces grip. Check castor swivel bearings for smooth rotation; apply a drop of light oil if they become stiff. Inspect toe-lock mechanisms for full engagement; replace any castor where the lock no longer holds under lever force. The powder-coated frame needs only a wipe-down; touch up any chips to prevent rust.

How should I store a wheeled grease bucket pump between service periods?

Park the trolley in a dry, sheltered area with the cover closed and follower plate pressed onto the grease surface. Engage the toe locks to prevent the trolley from rolling. In cold storage (below 5 degrees Celsius), grease stiffens; allow the pump to warm to ambient temperature before operating, or pump a few strokes to soften the grease in the chamber. Wipe the hose and coupler clean to prevent grit from entering the system on next use.

What safety precautions apply when using a mobile grease bucket pump?

Always engage the toe-lock castors before pumping; a rolling trolley under lever force is an injury risk. At 4,000 PSI, grease can cause injection injury if directed at skin. Never point the coupler at any body part. Wear safety glasses and heavy-duty gloves. When moving the loaded trolley, push from the handle end (not pull) to maintain visibility and control. On slopes, chock the wheels before releasing the toe locks. Depressurise the system before disconnecting any hose or coupler.

What is the advantage of the wheeled trolley over adding aftermarket wheels to a stationary pump?

The factory-integrated trolley is engineered as a complete system: the bucket sits in a cradle that prevents tipping, the pump handle clears the trolley frame at all positions, and the hose routes through a holder that prevents kinking during transport. Aftermarket wheel kits bolt onto the bucket base and often raise the centre of gravity, creating a tipping risk when the bucket is full. The factory trolley also uses heavier-gauge steel (4 mm) and industrial-grade castors rated for the combined weight of a full 30 kg bucket plus pump assembly.

Is the wheeled version worth the additional investment over the stationary pump?

If you service more than 3 machines per shift that are not adjacent to each other, the wheeled version typically pays back within the first month through reduced service time. A technician carrying a 15 kg bucket between 10 machines loses 2-3 minutes per move (lifting, walking, setting down, repositioning). Over a shift, that adds up to 20-30 minutes of non-productive time. The trolley eliminates that entirely. For single-machine bench-side use, the stationary version is sufficient and more compact.