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20 Best Lock On Grease Coupler (2023 Updated)

A lock on grease coupler is a device used to connect a grease gun to a grease fitting. It consists of a coupler body with a sleeve that slides over the grease fitting, and a locking ring that secures the coupler body to the grease fitting.

The sleeve has a seal that forms a seal around the grease fitting, and the locking ring has a series of teeth that bite into the surface of the grease fitting to create a secure connection.

20 Best Lock On Grease Coupler

Product Image Product Name Features Price

LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The

  • Locks on, does not leak. Rated up to 10,000 PSI.
  • 1/8″ NPT compatible with all grease guns – battery, pneumatic, manual.
  • Grease goes in, not on, the machine.

Lumax LX-1403 Heavy-Duty Quick-Release, Grease Coupler

  • Built for heavy-duty service
  • Suitable for Use on most Hand, Battery Powered or Air Operated Grease Guns & Bulk Grease Pumps

Airtec Lube-Shuttle Safelock Locking Grease Coupler

  • Unlocks even under high pressure!
  • Helps take the mess out of greasing.
  • Fits all NPT 1/8 R threads (most grease guns).

LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The Machine.

  • Brand: Fettpresse-kupplung
  • Color: Silver
  • Package Dimensions: 5.3 x 3.2 x 0.9 inches

LockNLube Pistol-Grip Grease Gun – LockNLube Grease Coupler / Green Steel Barrel

  • LockNLube Grease Coupler Locks on, stays on. Doesn’t leak.
  • Loop & Lock storage feature keep you clean.
  • 20″ Heavy Duty Hose and in-line hose swivel.

Lincoln 5900 Powerlock Grease Coupler

  • The unique reverse-jaw design holds the grease fitting securely to the coupler’s seat eliminating grease bypass
  • Allows users to use both hands when operating manual grease guns

LockNLube 90 Degree Grease Coupler Adapter LNL120

  • Right angle adapter to reach grease fittings in tight spaces.
  • Easily connects to your LockNLube (or any grease coupler) using a Zerk fitting mounted inside the sliding collar.

LockNLube LNL121 Push on 90 Grease Coupler

  • Alow-profile 90 adaptor for hard-to-reach grease fittings
  • Creates a leak-free seal with your LockNLube Grease Coupler
  • Easily connects to all jaw-type couplers

Performance Tool W54212 Grease Gun Coupler

  • Length (cm): 15.2
  • Width (cm): 15.2
  • Height (cm): 12.7

LockNLube Grease Gundom – Grease Gun and Coupler Cap (Orange)

  • Patented design stop drips and leaks with this high-quality nitrile rubber cap.
  • The Grease Gun Barrel Cap, aka Grease Gundom, keeps any grease gun clean.

Milwaukee 49-16-2648 Right Angle Grease Coupler

  • M18 Right Angle Coupler Grease Gun
  • The product is easy to use and easy to handle
  • The product is highly durable

LockNLube Grease Hose Swivel – 10,000 PSI

  • Rated up to 10,000 PSI – use with any grease gun.
  • Only 1.5 in. long.
  • Heavy-duty construction withstands lateral forces – won’t snap under pressure.

LockNLube Recessed Fitting Grease Adapter, LNL128

  • 6 inch overall length gives easy access to deeply recessed or hard-to-reach fittings.
  • Cup-shaped working end seats cleanly on grease fitting.

Lincoln Hydraulic Coupler 5852

  • For all hydraulic-type grease fittings.
  • Small outside diameter permits easy contact with recessed fittings.
  • Replaceable hardened steel jaws.

Plews Coupler Grease Gun

  • Standard Jaw-Type Coupler
  • Has Spring-Loaded Ball Check Valve
  • Recommended Working Pressure Is 3,000 Psi

Lincoln Standard Grease Coupler – G300

  • For use with most hand-operated grease guns and equipment.
  • Knurled body and mill flats for easy use, installation and removal.

Milwaukee 49-16-2649 High Pressure Grease Coupler (2-Pack)

  • The product is easy to use and easy to handle.
  • The product is highly durable.
  • The Product is Easy to Use and Easy to Handle. The Product is Highly Durable. Made In China.
LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The
  • Locks on, does not leak. Rated up to 10,000 PSI.
  • 1/8″ NPT compatible with all grease guns – battery, pneumatic, manual.
  • Grease goes in, not on, the machine.
Lumax LX-1403 Heavy-Duty Quick-Release, Grease Coupler
  • Built for heavy-duty service
  • Suitable for Use on most Hand, Battery Powered or Air Operated Grease Guns & Bulk Grease Pumps
Airtec Lube-Shuttle Safelock Locking Grease Coupler
  • Unlocks even under high pressure!
  • Helps take the mess out of greasing.
  • Fits all NPT 1/8 R threads (most grease guns).
LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The Machine.
  • Brand: Fettpresse-kupplung
  • Color: Silver
  • Package Dimensions: 5.3 x 3.2 x 0.9 inches
LockNLube Pistol-Grip Grease Gun – LockNLube Grease Coupler / Green Steel Barrel
  • LockNLube Grease Coupler Locks on, stays on. Doesn’t leak.
  • Loop & Lock storage feature keep you clean.
  • 20″ Heavy Duty Hose and in-line hose swivel.
Lincoln 5900 Powerlock Grease Coupler
  • The unique reverse-jaw design holds the grease fitting securely to the coupler’s seat eliminating grease bypass
  • Allows users to use both hands when operating manual grease guns
LockNLube 90 Degree Grease Coupler Adapter LNL120
  • Right angle adapter to reach grease fittings in tight spaces.
  • Easily connects to your LockNLube (or any grease coupler) using a Zerk fitting mounted inside the sliding collar.
LockNLube LNL121 Push on 90 Grease Coupler
  • Alow-profile 90 adaptor for hard-to-reach grease fittings
  • Creates a leak-free seal with your LockNLube Grease Coupler
  • Easily connects to all jaw-type couplers
Performance Tool W54212 Grease Gun Coupler
  • Length (cm): 15.2
  • Width (cm): 15.2
  • Height (cm): 12.7
LockNLube Grease Gundom – Grease Gun and Coupler Cap (Orange)
  • Patented design stop drips and leaks with this high-quality nitrile rubber cap.
  • The Grease Gun Barrel Cap, aka Grease Gundom, keeps any grease gun clean.
Milwaukee 49-16-2648 Right Angle Grease Coupler
  • M18 Right Angle Coupler Grease Gun
  • The product is easy to use and easy to handle
  • The product is highly durable
LockNLube Grease Hose Swivel – 10,000 PSI
  • Rated up to 10,000 PSI – use with any grease gun.
  • Only 1.5 in. long.
  • Heavy-duty construction withstands lateral forces – won’t snap under pressure.
LockNLube Recessed Fitting Grease Adapter, LNL128
  • 6 inch overall length gives easy access to deeply recessed or hard-to-reach fittings.
  • Cup-shaped working end seats cleanly on grease fitting.
Lincoln Hydraulic Coupler 5852
  • For all hydraulic-type grease fittings.
  • Small outside diameter permits easy contact with recessed fittings.
  • Replaceable hardened steel jaws.
Plews Coupler Grease Gun
  • Standard Jaw-Type Coupler
  • Has Spring-Loaded Ball Check Valve
  • Recommended Working Pressure Is 3,000 Psi
Lincoln Standard Grease Coupler – G300
  • For use with most hand-operated grease guns and equipment.
  • Knurled body and mill flats for easy use, installation and removal.
Milwaukee 49-16-2649 High Pressure Grease Coupler (2-Pack)
  • The product is easy to use and easy to handle.
  • The product is highly durable.
  • The Product is Easy to Use and Easy to Handle. The Product is Highly Durable. Made In China.

1. LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The

LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The

  • Locks on, does not leak. Rated up to 10,000 PSI.
  • 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.
  • World’s original locking grease coupler.

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Amazon.com – Seller
eBay
Walmart – LockNLube
locknlube.com

Product Details

Specifications

Details
Product Dimensions 3.45 x 0.63 x 1.66 inches
Is Discontinued By Manufacturer No
Item Package Quantity 1

Reviews From Real Customers

BruceB
Peter P.
DarrenS

2. Lumax LX-1403 Heavy-Duty Quick-Release, Grease Coupler

Lumax LX-1403 Heavy-Duty Quick-Release, Grease Coupler

  • Built for heavy-duty service
  • Suitable for Use on most Hand, Battery Powered or Air Operated Grease Guns & Bulk Grease Pumps
  • Ergonomic Thumb Lever Design makes Coupling and Uncoupling totally Effortless
  • Several quality control checks to ensure the highest quality level

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Amazon.com
eBay
Walmart
Tools Plus

Product Details

Specifications

Details
Adapter Type Fixed
Coupler Type Grease Coupler
Grease Coupler Type Standard Coupler
Thread Size 1/8 in
Application Grease Gun

Reviews From Real Customers

AZ

3. Holt Industries Locking Grease Coupler 56123

Holt Industries Locking Grease Coupler 56123

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Amazon
eBay – sugar-beans-deals-and-treasures-4u
Harbor Freight Tools

Product Details

Specifications

Details
Diameter 17mm
Maximum pressure (PSI) 6000 PSI
Product Length 3.60 in
Product Width 1.91 in
Thread size 1/8 in.-NPT(F)

Reviews From Real Customers

Viking
Sc
Happy customer

4. Airtec Lube-Shuttle Safelock Locking Grease Coupler

Airtec Lube-Shuttle Safelock Locking Grease Coupler

  • Unlocks even under high pressure!
  • Helps take the mess out of greasing.
  • Fits all NPT 1/8 R threads (most grease guns).

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Sold By Price
Amazon
bigamart.com

Product Details

Specifications

Details
dimensions ‎13.6 x 12 x 2.6 cm; 120 Grams

Reviews From Real Customers

agrizone.net
starfighter-01
lack_rick

5. LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The Machine.

LockNLube Grease Coupler Locks onto Zerk Fittings. Grease Goes in, Not on The Machine.

  • Brand: Fettpresse-kupplung
  • Color: Silver
  • Package Dimensions: 5.3 x 3.2 x 0.9 inches

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Amazon
eBay

Product Details

Specifications

Details
Product Dimensions ‎3.45 x 0.63 x 1.66 inches
Country of Origin ‎South Africa
Is Discontinued By Manufacturer ‎No
Cutting Diameter ‎0.63 Inches
Assembled Diameter ‎0.63 Inches

Reviews From Real Customers

bid_4_one
thomacomman0
rettunreffulf

6. LockNLube Pistol-Grip Grease Gun – LockNLube Grease Coupler / Green Steel Barrel

LockNLube Pistol-Grip Grease Gun - LockNLube Grease Coupler / Green Steel Barrel

  • LockNLube Grease Coupler Locks on, stays on. Doesn’t leak.
  • Loop & Lock storage feature keep you clean.
  • 20″ Heavy Duty Hose and in-line hose swivel.
  • Rubber grip and ergonomic handle.
  • LockNLube Rebuild Kit. Easily replace the seal and jaws, not the coupler.

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Amazon
eBay
Walmart
locknlube.com

Product Details

Specifications

Details
Maximum Operating Pressure 5,000 PSI (345 Bar)
Flow Rate (strokes per oz.) 57
Hose Length (inches) 20
Outlet Thread Size 1/8″ NPT
Capacity (oz.) 16 (bulk); 14.5 (cartridge)

Reviews From Real Customers

AOA
ROBERT M.
Barry C.

7. Gler – The Original Lock-On Zerk Fitting Grease Gun G Coupler, Easy on & Off (1, ⅛ NPT)

Gler - The Original Lock-On Zerk Fitting Grease Gun G Coupler, Easy on & Off (1, ⅛ NPT)

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Amazon
Bonanza – roxy media’s booth

Product Details

Reviews From Real Customers

mwad6153
burgo55
andrewlewis101

8. Lincoln 5900 Powerlock Grease Coupler

Lincoln 5900 Powerlock Grease Coupler

  • The unique reverse-jaw design holds the grease fitting securely to the coupler’s seat eliminating grease bypass
  • Allows users to use both hands when operating manual grease guns
  • Lever-action design of the coupler allows for quick attachment to and release from the fitting during lubrication tasks
  • The coupler’s durable, all-steel construction provides long service life
  • Flexible rubber sleeve offsets pressure applied to the lever and protects the hose from unnecessary wear

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Amazon
eBay
Walmart
Acme Tools

Product Details

Specifications

Details
For Use With Lincoln Grease Guns and Power Lubers
Max. Pressure 6,000 psi
Working Pressure 7,500 psi
Connection 1/8 FNPT
Min. Burst Pressure 13,000 psi

Reviews From Real Customers

lon6756
bluestreakmissions
shawfellin-0

9. LockNLube 90 Degree Grease Coupler Adapter LNL120

LockNLube 90 Degree Grease Coupler Adapter LNL120

  • Right angle adapter to reach grease fittings in tight spaces.
  • Easily connects to your LockNLube (or any grease coupler) using a Zerk fitting mounted inside the sliding collar.
  • Three hardened steel jaws, rubber seal, and check valve make a tight, reliable connection.

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Amazon
eBay
Walmart – LockNLube
Speedway Motors

Product Details

Specifications

Details
Product Length 3.25 in
Warranty 1-Year Warranty
Container Size 5.5 in
Package Quantity 1
Power Type Manual

Reviews From Real Customers

Gene T.
David S.

10. LockNLube LNL121 Push on 90 Grease Coupler

LockNLube LNL121 Push on 90 Grease Coupler

  • Alow-profile 90 adaptor for hard-to-reach grease fittings
  • Creates a leak-free seal with your LockNLube Grease Coupler
  • Easily connects to all jaw-type couplers
  • No need to keep different couplers on different grease guns. Simply use an adaptor for troublesome grease fittings

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Amazon
eBay
Walmart – LockNLube
locknlube.com

Product Details

Specifications

Details
Product Length 2 in
Warranty 1-Year Warranty
Container Size 4.5 in
Package Quantity 1
Power Type Manual

Reviews From Real Customers

JohnS
James D.
Alden C.

11. Performance Tool W54212 Grease Gun Coupler

Performance Tool W54212 Grease Gun Coupler

  • Length (cm): 15.2
  • Width (cm): 15.2
  • Height (cm): 12.7
  • Weight (g): 454

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Walmart
Ace Hardware

Product Details

Specifications

Details
Diameter 1/8″
Angle Assorted
Color Silver
Maximum Pressure 3000 psi
Number in Package 1 pk

Reviews From Real Customers

Cabover Camper
Burt
leapinglizard

12. Lumax LX-1403 Quick Lock / Release Grease Coupler 15,000 PSI Heavy-Duty 4X

Lumax LX-1403 Quick Lock / Release Grease Coupler 15,000 PSI Heavy-Duty 4X

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Amazon
eBay – tools-plus-outlet

Product Details

13. LockNLube Grease Gundom – Grease Gun and Coupler Cap (Orange)

LockNLube Grease Gundom - Grease Gun and Coupler Cap (Orange)

  • Patented design stop drips and leaks with this high-quality nitrile rubber cap.
  • The Grease Gun Barrel Cap, aka Grease Gundom, keeps any grease gun clean.
  • Compatible with any standard 14 oz grease gun (manual, cordless, pneumatic).
  • Use different colors to identify the grease in multiple grease guns.
  • Includes a coupler cap of the same color.

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Amazon
Walmart – LockNLube
Tractor Supply Company

Product Details

Specifications

Details
Product Length 4 in
Warranty One Year Manufacturer’s Warranty
Container Size 8 in. x 6 in. x 3 in
Package Quantity 1
Product Width 3 in

Reviews From Real Customers

Gary G.
Burt K.
John D.

14. Milwaukee 49-16-2648 Right Angle Grease Coupler

Milwaukee 49-16-2648 Right Angle Grease Coupler

  • M18 Right Angle Coupler Grease Gun
  • The product is easy to use and easy to handle
  • The product is highly durable

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Sold By Price
Amazon
eBay
Theisen’s
ToolUp.com

Product Details

Specifications

Details
Assembled Weight (lbs) 0.24 lbs
Package Weight 0.24
Package Weight UOM LB
Material Metal
Fitting Length 0 in

Reviews From Real Customers

newriverfishinfool
kobe1621
honigfot

15. LockNLube Grease Hose Swivel – 10,000 PSI

LockNLube Grease Hose Swivel - 10,000 PSI

  • Rated up to 10,000 PSI – use with any grease gun.
  • Only 1.5 in. long.
  • Heavy-duty construction withstands lateral forces – won’t snap under pressure.
  • Only grease hose swivel to withstand 10,000 PSI.
  • For cordless grease guns, install directly behind the coupler.

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Sold By Price
Amazon
eBay
Walmart – LockNLube
Tractor Supply Company

Product Details

Specifications

Details
Product Length 1.5 in
Warranty 1-Year Warranty
Container Size 3.25 in
Package Quantity 1
Power Type Manual

Reviews From Real Customers

Harold H.
Patrick T.
Marshall S.

16. LockNLube Recessed Fitting Grease Adapter, LNL128

LockNLube Recessed Fitting Grease Adapter, LNL128

  • 6 inch overall length gives easy access to deeply recessed or hard-to-reach fittings.
  • Cup-shaped working end seats cleanly on grease fitting.
  • Heavy duty construction built for professional use.

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Amazon
eBay
Walmart – LockNLube

Product Details

Specifications

Details
Product Dimensions 8.5 x 2 x 1 inches
Item Package Quantity 1

Reviews From Real Customers

Stephen M.
Ken C.
KenC

17. Lincoln Hydraulic Coupler 5852

Lincoln Hydraulic Coupler 5852

  • For all hydraulic-type grease fittings.
  • Small outside diameter permits easy contact with recessed fittings.
  • Replaceable hardened steel jaws.
  • Built-in ball check prevents leak and lubricant backup.
  • Inlet 1/8in.

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Amazon
eBay
Walmart
Motion Industries

Product Details

Reviews From Real Customers

C.M.
d.
g.

18. Plews Coupler Grease Gun

Plews Coupler Grease Gun

  • Standard Jaw-Type Coupler
  • Has Spring-Loaded Ball Check Valve
  • Recommended Working Pressure Is 3,000 Psi
  • For Hand Operation Lube Equipment Only
  • Discovery Con, Nbr, Sup

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Amazon
Walmart
Ace Hardware
Valu Home Centers

Product Details

Specifications

Details
Assembled Depth (in) 0.75 in
Assembled Height (in) 4 in
Assembled Width (in) 3.5 in
Assembled Weight (lbs) 0.078 lbs
Information Effective Date 2015-06-29T00:00:00.000

Reviews From Real Customers

KenD

19. Lincoln Standard Grease Coupler – G300

Lincoln Standard Grease Coupler - G300

  • For use with most hand-operated grease guns and equipment.
  • Knurled body and mill flats for easy use, installation and removal.

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Amazon
Walmart
Grainger Industrial Supply
Zoro

Product Details

Specifications

Details
Connection 1/8 in MNPT
Max. Pressure 3,000 psi
Working Pressure 3,000 psi
Min. Burst Pressure 8,000 psi
Country of Origin (subject to change) India

Reviews From Real Customers

o.

20. Milwaukee 49-16-2649 High Pressure Grease Coupler (2-Pack)

Milwaukee 49-16-2649 High Pressure Grease Coupler (2-Pack)

  • The product is easy to use and easy to handle.
  • The product is highly durable.
  • The Product is Easy to Use and Easy to Handle. The Product is Highly Durable. Made In China.

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Sold By Price
Acme Tools
Theisen’s
NAPA Auto Parts
ToolBarn.com

Product Details

Specifications

Details
Assembled Weight (lbs) 0.13 lbs
Package Weight 0.13
Package Weight UOM LB
Material Metal
Fitting Length 0 in

Reviews From Real Customers

zdm4737
kilbuckers
tcford

Conclusion

A lock on grease coupler is a device that is used to connect a grease gun to a grease fitting. The coupler consists of a body with a male thread that is connected to the grease gun, and a jaws that are used to grip the grease fitting.

The jaws are opened and closed by a trigger that is located on the body of the coupler.

The lock on grease coupler is an ideal device for use in difficult to reach grease fittings. The coupler can be easily attached to the grease gun, and the jaws can be opened and closed with one hand.

The lock on grease coupler is also useful in applications where a high level of torque is required to loosen the grease fitting.

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