KUNZ 200.4000 Universal Grease Tool for Lubricating Aircraft Wheel Bearings

Unlike manual greasing, which can be inconsistent and messy, the KUNZ UGT evenly distributes grease across the entire bearing. This ensures optimal lubrication, reduces the risk of dry spots or over-greasing, and helps extend the lifespan of aircraft wheel bearings. Its ergonomic design also minimizes operator fatigue, making the process safer and more efficient.

The KUNZ Universal Grease Tool operates on a compressed air supply with a minimum requirement of 29 to 43.5 PSI (2 to 3 bar) and a maximum of 87 to 101.5 PSI (6 to 7 bar). The unit is designed for a DN7.2/7.2 mm profile connection. Maintaining proper air pressure ensures smooth, consistent grease delivery and reliable performance during aircraft bearing servicing.

The UGT uses a pneumatically driven piston pump controlled via a foot switch, allowing hands-free operation. This system provides steady, controlled grease delivery while freeing up the operator to focus on positioning and safety. The pneumatic cylinder is durable and requires only minimal maintenance for reliable long-term service.

The grease type depends entirely on the aircraft bearings being serviced and should always follow the Component Maintenance Manual (CMM) specifications. The UGT itself can handle any approved grease type, but it is critical not to mix greases inside the unit. If switching to a different grease, the tool must be thoroughly cleaned to prevent contamination and ensure compliance with maintenance standards.

The UGT accommodates a wide range of bearing cup inner diameters, from 0 to 7.87” (0 to 20 cm). Supported size ranges include:

• 0 to 3.15” (0 to 8 cm)
• 3.15” to 3.94” (8 to 10 cm)
• 3.94” to 4.72” (10 to 12 cm)
• 4.72” to 5.51” (12 to 14 cm)
• 5.51” to 6.3” (14 to 16 cm)
• 6.3” to 7.09” (16 to 18 cm)
• 7.09” to 7.87” (18 to 20 cm)

If a bearing cone does not fit within these ranges, operators can contact PJi for assistance. PJi can also provide replacement cones if any are lost or damaged during use.

The UGT is compatible with multiple pail sizes by using different lid options. The most common lid is part number 200.0055, designed to fit grease buckets with diameters between 10.2” and 11.4” (26 to 29 cm), which corresponds to the “standard” 35-lb (16 kg) pail. Other lid sizes are also available upon request, allowing operators flexibility for various container dimensions.

Yes, the Universal Grease Tool can be used with either 120-lb (55 kg) or 440-lb (200 kg) grease barrels. To operate, a made-to-measure scraping lid (sold separately) is required to create the necessary vacuum inside the barrel. Several scraping lids are available to match different barrel diameters.

The scraping lid seals the grease barrel, enabling the pump to maintain consistent suction during operation. It also pushes grease down inside the barrel to prevent air pockets or uneven flow. This ensures that every application is smooth and consistent throughout the lubrication process.

Safety pushbuttons are located on both the right and left front posts. They must be pressed simultaneously to activate the closure head, reducing the risk of accidental operation. This design helps prevent injuries and ensures the tool is only engaged when the operator is ready.

The Universal Grease Tool does not require consumables or routine spare parts. It is designed for long-term use without frequent part replacements. However, if the equipment becomes damaged or specific components need replacement, operators should contact PJi’s aviation specialists to source the correct KUNZ-approved parts.

The Universal Grease Tool does not require calibration, as it is not a measuring device. Its primary function is to deliver grease into aircraft wheel bearings safely and efficiently without requiring measurement adjustments. This design minimizes downtime and reduces ongoing maintenance costs compared to tools that require calibration.

Yes, KUNZ offers the Grease Barrel Cart as an optional accessory. The cart makes it easy and safe to transport barrels up to 441 lbs (200 kg), reducing strain on operators and improving efficiency in busy MRO or airline service environments.