LockNLube GB17 Grease Buster Grease Fitting Cleaner

The LockNLube GB17 Grease Buster® clears clogged Zerk fittings and restores grease flow to pins, shafts, bushings, and joints without replacing parts. Manufactured in the USA, this tool uses penetrating fluid and simple hydraulic pressure to dissolve dried grease that blocks a fitting. The GB17’s hollow piston is filled with a liquid penetrating oil (not aerosol). With the heavy-duty adjustable coupler locked onto the Zerk, a few light taps on the piston drive solvent into the fitting to break down the blockage so a grease gun can take over. The updated design adds a textured grip for secure handling and two Buna-N O-rings on the piston to hold pressure and reduce seepage.

For technicians who service equipment in construction, agriculture, and fleet shops, the GB17 reduces downtime and keeps bearings in service longer—often saving the cost of new components. A hose extension and a pneumatic piston are available for users who prefer an air hammer approach. Note: the GB17 is not for sealed bearings.

LockNLube Grease Buster Grease Fitting Cleaner At a Glance

• Hydraulic cleaning action: Drives penetrating oil through clogged Zerks to restore flow.
• Updated piston & grip: Textured body and dual O-rings help maintain pressure with better control.
• Adjustable coupler: Locks securely to SAE or metric grease fittings for a tight seal.
• Buna-N O-rings: Compatible with most petroleum oils and greases; rated from -30°F to 250°F.
• Reduces parts replacement: Frees fittings so bearings can be greased instead of replaced.
• Optional accessories: Hose extension and pneumatic piston available for specialized setups.
• Made in USA: Quality manufacturing for shop and field use.
• Use guidance: Light, rapid hammer taps dissolve clogs; not for sealed bearings.

Markets

• Construction & Heavy Equipment Frees loader and excavator fittings to keep machines on schedule.
• Agriculture Clears stubborn Zerks on tractors and implements after long storage.
• Fleet & Truck Maintenance Restores fittings on chassis and suspension components.
• Industrial & Manufacturing Supports preventative maintenance on presses and conveyors.
• Municipal & Public Works Keeps mixed fleets lubricated without lengthy tear-downs.
• Trade Schools & Training Centers Demonstrates proper fitting recovery and lubrication technique.

Maintenance teams in these markets value a simple tool that saves time and parts. The GB17 lets them push penetrating oil directly through a blocked Zerk and free it for regular greasing, which helps avoid disassembly and bearing replacement. The adjustable coupler holds steady on recessed fittings, and the dual O-ring piston maintains pressure as the solvent works through the clog. Shops that already carry a grease gun and a quality penetrating oil can add the GB17 to their service cart and quickly rescue fittings during PMs, roadside work, or seasonal start-ups. With optional hose and pneumatic attachments, the process adapts to different access points and technician preferences.

LockNLube GB17 Grease Buster Grease Fitting Cleaner Features

• Cleans and flushes out old dried grease from fittings, pins, shafts, bushings, and joints
• Uses penetrating fluid and hydraulic pressure
• Reduces downtime. Much cheaper than new bearings!
• Hose extension and pneumatic piston available
• Not for use with sealed bearings

LockNLube GB17 Grease Buster Grease Fitting Cleaner Includes

• (1) GB17 Grease Buster® Body
• (1) Hollow Piston with Thumb Knob
• (2) Buna-N O-Rings (installed on piston)

LockNLube GB17 Grease Buster Grease Fitting Cleaner Specifications

• Model: GB17
• Function: Grease fitting cleaner for clogged Zerk fittings
• Operating Method: Manual piston tapped with a hammer (light, rapid taps)
• Working Fluid: Liquid penetrating oil (not aerosol)
• O-Ring Material: Buna-N (Nitrile); -30°F to 250°F temperature range
• Chemical Compatibility (O-rings): Good/excellent with many petroleum oils/greases, hydraulic fluids, mineral oil; compatible with aliphatic hydrocarbons
• Not Compatible (O-rings): High-aromatic fuels, aromatic hydrocarbons (e.g., benzene), chlorinated hydrocarbons (e.g., trichloroethylene)
• Fitting Compatibility: SAE and metric Zerk fittings
• Use Limitation: Not for sealed bearings
• Country of Manufacture: USA

Why Professionals Choose the LockNLube Grease Buster Grease Fitting Cleaner

Technicians pick the GB17 because it solves a common problem fast—clogged Zerk fittings that won’t take grease. By sending penetrating oil into the fitting with controlled, light hammer taps, the tool dissolves dried grease so a grease gun can restore lubrication. The adjustable coupler and dual O-rings help the cylinder hold pressure, and the textured grip keeps hands steady. Compared with pulling a pin or replacing a bearing, using a grease fitting cleaner is quicker and far less costly. Crews servicing fleets, heavy equipment, or farm machinery can keep the GB17 alongside their grease gun coupler and penetrating oil, freeing fittings during PMs and getting machines back to work with less mess and less downtime.