LockNLube® Grease Gun Coupler
🚚 This item includes FREE shipping
- Completely hands-free and leak-free lock
- Easily disconnects, even under pressure
- Works on all Zerk fittings, SAE and metric
Includes a FREE rebuild kit valued at $17.99
"LockNLube Maintenance Team" Pocket Tshirt
$17.99Free US Shipping Over $20 • Money Back Guarantee
End greasing frustration with the original locking grease coupler!
- Locks on, stays on, won't leak. Rated up to 10,000 PSI
- Easily disconnects, even under pressure. No more broken Zerks
- 1/8" NPT compatible with all grease guns - battery, pneumatic, manual
- Grease goes in, not on, the machine
- Works on all Zerk fittings, SAE and metric
- Includes a rebuild kit! The LockNLube® is the world's only rebuildable grease coupler. Lowest lifetime cost.
- Patented Locking Technology. US Patent #8955544
- As seen on TruckU on the Motortrend Channel!
Also available with a 2" longer barrel for those deeply recessed fittings! Click here to purchase your XL Coupler from LockNLube.
Need a longer barrel for extra reach?
1/8" NPT 30 Degree Grease Fittings
$5.99This item ships FREE!
The LockNLube® Grease Coupler is compatible with all grease guns and grease fittings. It does not leak once locked on and will not pop off under pressure. No hands are needed to align or hold the coupler in place while greasing. You have both hands free to operate your grease gun and know that the grease will go in, not on, your machine. Guaranteed.
It has a unique sliding sleeve, activated by a thumb lever. The sleeve locks the four spring-steel jaws onto the Zerk fitting, and releases the jaws by pushing on the thumb lever. When the jaws are locked onto the Zerk, a leak-proof seal is created. The locked connection is positive and rigid preventing the coupler from coming loose and breaking the leak-proof seal. If a fitting becomes pressurized, especially a recessed one, just depress the thumb lever and release the coupler.
The LockNLube® Grease Coupler is fully rebuildable. If it starts to leak, you simply replace the seal and jaws and it is as good as new. See our tutorial here. We include a free rebuild kit with every coupler that we sell. Additional rebuild kits are also available from our store.
The LockNLube® Grease Coupler works with all grease gun manufacturers, including Lumax, Alemite, Plews lubrication (Edelman), Granger, SKF, Macnaught, ADT, Milwaukee, John Deere, Wilmar, Legacy, Allstar, Sealey, Draper and many others.
To see video reviews and read more customer comments, click here.
LockNLube® Grease Coupler Care & Maintenance:
Check out our YouTube channel for an easy method to clean dirt and grit out of your coupler. This will extend the life of the seal, which means longer use time between rebuilds. If you find your coupler starting to leak, try this cost-saving tip before you put a rebuild kit in it.
Consider using a Coupler Cap and Zerk Fitting Caps to keep your equipment clean.
The LockNLube® Grease Coupler is compatible with all grease guns and grease fittings. It does not leak once locked on and will not pop off under pressure. No hands are needed to align or hold the coupler in place while greasing. You have both hands free to operate your grease gun and know that the grease will go in, not on, your machine. Guaranteed.
It has a unique sliding sleeve, activated by a thumb lever. The sleeve locks the four spring-steel jaws onto the Zerk fitting, and releases the jaws by pushing on the thumb lever. When the jaws are locked onto the Zerk, a leak-proof seal is created. The locked connection is positive and rigid preventing the coupler from coming loose and breaking the leak-proof seal. If a fitting becomes pressurized, especially a recessed one, just depress the thumb lever and release the coupler.
The LockNLube® Grease Coupler is fully rebuildable. If it starts to leak, you simply replace the seal and jaws and it is as good as new. See our tutorial here. We include a free rebuild kit with every coupler that we sell. Additional rebuild kits are also available from our store.
The LockNLube® Grease Coupler works with all grease gun manufacturers, including Lumax, Alemite, Plews lubrication (Edelman), Granger, SKF, Macnaught, ADT, Milwaukee, John Deere, Wilmar, Legacy, Allstar, Sealey, Draper and many others.
To see video reviews and read more customer comments, click here.
LockNLube® Grease Coupler Care & Maintenance:
Check out our YouTube channel for an easy method to clean dirt and grit out of your coupler. This will extend the life of the seal, which means longer use time between rebuilds. If you find your coupler starting to leak, try this cost-saving tip before you put a rebuild kit in it.
Consider using a Coupler Cap and Zerk Fitting Caps to keep your equipment clean.
| Max pressure | 10,000 psi (690 Bar) |
| Zerk Compatibility | Fits all DIN and SAE specification Zerks (grease nipples). |
| Coupler Thread | ⅛” NPT female thread. |
| Dimensions | L: 3½ x W: 5/8 x H: 1⅗ In (L: 88mm x W: 16mm x H: 41 mm) |
| Diameter (front of coupler) | 5/8 in (16 mm). Fits most recessed grease fittings (Zerks). ~1mm larger than standard coupler |
| Weight | 4 oz. (100 grams) |
| Grease Gun Compatibility | Works with all grease gun types: pneumatic, manual, and electric. |
| Seal | Durable nitrile rubber seal for longevity under high pressure |
| Lock-on Mechanism | Four hardened steel jaws are resilient under high pressure. Patent protected. |
| Patent | US Patent #8,955,544 |
Trying to remove your old coupler and attach the LockNLube® Grease Coupler? Click here.
LockNLube Grease Coupler Spec Sheet
Illustrated Rebuild Kit Replacement Instructions
Grease Coupler Cap
Grease Fitting Caps (50 count)
- Shipping options are available at checkout
- All of our orders ship out of either our Illinois or New Hampshire warehouse within 3 business days.
- Shipping carrier varies by size and weight of the package.
- LockNLube's shipping department operates Monday through Friday, 8 am to 2 pm EST except for holidays.
Over 20,000 Five-Star Reviews
OVER 2.3K+ 5-STAR CUSTOMER REVIEWS
"I highly recommend LockNLube. Great product and unbelievable customer service!"
"I loved my first so much a bought a second. Don’t even worry about shopping around. This Is Your Grease Gun!!"
"Greatest thing since the invention of the aluminum beer can ... won't own a grease gun without it"
A CLOSER LOOK AT THE GREASE COUPLER
Our products are designed to outperform and outlast any other. Return within 1 year for a full refund, no questions asked.
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United StatesMy grease gun is a manual pump operated unit. Two days after I received my Lock N Lube tip I purchased a brand new battery operated unit. I’m never going back to my old manual. WAIT ?? Did I say never? Well as long as my new battery operated unit lets me down. If it does I will replace the tip with my LOCK N LUBE tip. I love it. Thanks LOCK N LUBE.
United StatesIt worked great
Pay loader hasn’t been greased in a while so lock n lube did a great job only a couple grease fittings wouldn’t take grease
United StatesLeak proof
The grease go’s in fitting not all over the place thank you very much
United States United StatesWorks great!
Finally I am able to lube my tractor. My other tips kept failing or blowing out, this is easy to use and rock solid!