S-808W Dual Mode Grease Gun

Frequently Asked Questions: S-808W Dual Mode Wide Barrel Grease Gun (Pistol + Lever, 650 cc, 7,000 PSI)

What is the S-808W and how does it differ from the standard S-808?

The S-808W is the wide-barrel variant of the S-808 dual-mode platform. Same telescopic-handle pistol/lever mechanism, same 7,000 PSI HP mode, but with a wider 63.5 mm barrel that accepts 450 g cartridges and holds 650 cc (20 oz.) bulk capacity. The standard S-808 uses the 57.15 mm barrel with 400 g cartridge and 500 cc bulk. The S-808W holds 30% more grease per fill, which reduces cartridge-change frequency on high-volume service routes. The 450 g cartridge is the stocked standard across Australian, New Zealand, and Pacific-region grease supply chains; for workshops in those markets, the S-808W is the cartridge-format-correct dual-mode SKU.

How does the telescopic handle switch between pistol and lever mode?

The telescopic handle slides between two locked positions via a spring-loaded button mechanism: lift the button to unlock, slide the handle to the desired position (retracted for pistol, extended for lever), press the button to lock in place. No tools needed, positive-click engagement, operable with gloved hands. In pistol mode (handle retracted), the operator squeezes the trigger with one hand for tight-access service. In lever mode (handle extended), the operator pumps the lever with two hands for higher pressure and volume output. The lock holds securely in both positions during pumping; there is no risk of accidental mode change during operation.

What pressure and output does each mode deliver on the S-808W?

HP mode delivers 7,000 PSI (483 bar) at 0.65 g per stroke (1 oz. per 44 strokes). HV mode delivers 1.1 g per stroke (1 oz. per 26 strokes) at 4,500 PSI in pistol configuration or 5,500 PSI in lever configuration. The pressure difference between pistol-HV and lever-HV reflects the mechanical advantage of the extended lever handle. HP mode is for stiff or crusted fittings where pressure is the limiting factor; HV mode is for open-access multi-point routes where throughput matters more than peak pressure. Both modes operate through the same dual discharge ports.

Can the S-808W replace two separate grease guns?

Yes. The S-808W eliminates the need to carry a separate pistol grease gun and a separate lever grease gun on the same service route. Pistol mode covers tight-access one-hand service (engine bays, inside wheel arches, confined spaces); lever mode covers open-access two-hand service (chassis zerks, multi-point routes, stubborn fittings). For workshops whose daily service workflow spans both access patterns, the dual-mode approach saves tool-budget cost, storage space, and the productivity cost of switching between guns mid-service.

Is the 650 cc wide-barrel capacity better for fleet and farm service?

Yes. The 650 cc (20 oz.) bulk capacity covers roughly 50 typical fittings at 12 g each per fill, versus about 40 fittings for the standard 500 cc S-808. For agricultural contractors servicing tractor chassis, combine harvesters, and hay balers with 30-50+ fittings per service round, the larger capacity measurably reduces mid-shift cartridge changes. For fleet-service depots covering multiple vehicles per shift, the fewer refills compound into meaningful productivity gain across the working day. The trade-off is a physically larger and heavier gun when fully loaded.

Does the S-808W accept standard 14 oz. (400 g) cartridges?

No. The S-808W uses the 63.5 mm wide-barrel format sized for 450 g cartridges. Standard 14 oz. (400 g) cartridges are narrower and will not seat properly in the wide barrel. For 400 g cartridge compatibility with the same dual-mode mechanism, select the standard-barrel S-808. For bulk fill, the S-808W accepts grease from 5 kg, 15 kg, or 20 kg pails regardless of cartridge format, so a workshop with mixed supply can still bulk-fill the S-808W from its general grease pail.

Can 7,000 PSI in lever mode cause a grease injection injury?

Yes. Grease injection injuries can occur at pressures as low as 100 PSI; 7,000 PSI is far above the threshold and carries significant injury risk. A pinhole in the hose or unseated coupler can drive grease through intact skin. The initial wound looks like a tiny puncture and often does not hurt much initially; grease migrates along tissue planes and causes chemical damage over 24-72 hours. Go to an emergency department immediately for any suspected injection injury. Above 7,000 PSI the likelihood of amputation escalates significantly if treatment is delayed. PPE mandatory: wraparound safety glasses (ANSI Z87.1+), nitrile gloves, long sleeves, steel-capped shoes.

How do I prime the S-808W after a cartridge change?

Retract and lock the plunger rod, unscrew the barrel, insert the 450 g cartridge nose-first with both seals peeled, screw the head back on, release the plunger rod. Crack the air bleeder valve a quarter turn, then pump 3 to 5 full strokes with the coupler disconnected until grease flows cleanly. Close the bleeder valve when grease flows without air bubbles. Prime in whichever mode is currently selected. First-use priming on a new gun may take 5-8 strokes; subsequent priming after cartridge changes typically takes 3-5 strokes. If priming fails: check the plunger rod is fully released, inspect for air voids at the cartridge-head interface, and in cold weather allow grease 5-10 minutes to warm to ambient.

Is the S-808W telescopic handle durable enough for daily fleet service?

Yes. The telescopic handle uses mechanical components (spring-loaded button lock, steel slide rails) rated for daily professional use across the service life of the gun. The button-lock mechanism is designed for thousands of mode-switch operations. Good practice: operate the switch with the gun depressurised, avoid forcing a stuck handle (investigate the cause; typically grease contamination that needs cleaning), and keep the telescopic rail clean during regular maintenance. Replacement telescopic-handle components are available through the STAR spare parts catalogue if wear develops over extended service life.

How should I store the S-808W between service cycles?

For storage under 30 days: leave grease in the gun, retract and lock the plunger rod, cap the coupler nozzle, set the telescopic handle to the retracted (pistol) position, and store horizontally in a clean dry area. For storage over 30 days: unscrew the barrel, drain the reservoir, wipe the barrel interior with a lint-free rag dampened in mineral spirits, dry completely, reassemble with a light film of grease on the plunger-rod seal, cap the coupler, and store horizontally. Always store out of direct sunlight. For the telescopic handle: leave in the retracted position during storage to reduce the exposed rail surface area that could attract dust or corrosion.

What grease types are compatible with the S-808W?

The S-808W is compatible with NLGI 1, 2, and 3 greases across all standard chemistries: lithium complex, calcium sulphonate, aluminium complex, polyurea, moly-fortified EP, and synthetic PAO-based. For farm equipment, NLGI 2 lithium complex or moly-fortified EP is standard. For heavy construction equipment, moly-fortified EP or calcium sulphonate handles shock loading. For marine-adjacent service, calcium sulphonate or aluminium complex resists water wash-out. Never mix incompatible thickener chemistries in the same gun; for mixed fleets, maintain separate dedicated guns per chemistry.

Is the S-808W available for OEM and private-label orders?

Yes. OEM and private-label manufacture is available on the S-808W for Australian/NZ agricultural-supply distributors, heavy-equipment fleet-tool distribution, and global wide-barrel grease gun trade. Options include custom branding, packaging design for Australian/NZ retail or industrial-supply format, BSPT/NPT/M10 thread variants, carrying case options, and custom kit configurations. MOQ applies. Shipping is sea freight to Melbourne, Sydney, Auckland, and other Oceania hub ports, with mixed-container consolidation with other STAR products possible. Contact the STAR export team for distributor pricing, lead times, and packaging specifications.

How does the S-808W compare to a cordless electric grease gun?

The S-808W is manual-powered (no battery, no charger, no electrical dependency) with dual-mode pistol/lever operation at 7,000 PSI. Cordless electric grease guns deliver consistent pressure without manual pumping but depend on battery charge, are heavier, and typically cost 3-5X more. The S-808W's advantage: no battery to charge, no downtime waiting for charge cycles, lighter overall weight, simpler mechanism with fewer failure points, and the dual-mode flexibility that cordless guns lack (cordless guns are single-mode). The cordless advantage: less operator fatigue on very high-volume routes (100+ fittings per shift). For most professional service workflows covering 30-60 fittings per shift, the S-808W's manual dual-mode approach is the practical and cost-effective choice.

Is the extra weight of the S-808W a problem for one-handed pistol use?

The S-808W is heavier than the standard S-808 when fully loaded (approximately 200-250 g more grease mass plus the wider barrel), which is noticeable in pistol mode where the operator holds the full gun weight with one hand. For extended one-hand pistol-mode service across many fittings, the extra weight can cause fatigue faster than the standard-barrel S-808. For mixed-mode service where pistol mode is used for a few tight-access fittings and lever mode handles the bulk of the route, the weight difference is less significant because lever mode distributes the load across both hands. For workshops where one-hand pistol service is the dominant use pattern and weight matters, the standard S-808 or the dedicated S-807W Professional pistol gun may be the better ergonomic fit.