9 Best Lock On Grease Coupler for Effortless Lubrication Ultimate

If you’ve ever found yourself wrestling with traditional couplers or dealing with messy grease applications, prepare to discover a tool that could be a true game-changer for your toolkit.

Engineered with precision and reliability in mind, these couplers redefine your greasing experience. Whether you’re a professional in the automotive industry, manufacturing, or agriculture, or a DIY enthusiast, our lock-on grease couplers promise to simplify your greasing tasks. Discover the best in the market and elevate your maintenance routine to new heights.

Today we are going to review the best lock on grease couplers.

9 Best Lock On Grease Coupler in 2024

Here are nine of the best locking grease gun couplers based on various factors, including user reviews and expert recommendations.

1. LockNLube Grease Gun Coupler

The LockNLube Grease Gun Coupler is meticulously engineered to lock onto Zerk fittings with unmatched precision. Its design ensures that grease flows directly into the intended fitting, eliminating wastage and spillage. Crafted for durability and efficiency, this coupler stands out as a beacon of reliability in the realm of greasing tools.

Features

• High-Pressure Resistance: Built to withstand pressures up to 10,000 PSI, this coupler guarantees a secure and leak-free connection.
• Universal Compatibility: With a 1/8″ NPT fitting, it seamlessly integrates with all grease guns, whether pneumatic, manual, or electric.
• Hands-Free Operation: Once attached, the coupler stays in place, allowing users to focus on the task without the need for constant alignment or adjustment.
• Rebuildable Design: The LockNLube can be easily rebuilt with a replacement seal and jaws, ensuring longevity and cost-effectiveness.

Applications

Ideal for a myriad of industries, including automotive, manufacturing, agriculture, and marine, the LockNLube Grease Gun Coupler simplifies greasing tasks across the board.

Pros

• Ensures precise greasing without spillage, reducing waste and mess.
• Built to last with its rebuildable design, offering long-term value.
• Simple attachment and detachment mechanism, enhanced by the thumb lever.
• Works seamlessly with a wide range of grease guns and fittings.

Cons

• Regular checks and replacements are necessary to maintain optimal performance.

Locknlube Grease Gun Coupler Parts

The LockNLube grease gun coupler typically consists of the following parts: a thumb lever for easy operation, a locking sleeve to secure the connection, a seal for preventing leaks, and a durable steel construction for longevity.

2. AORRZER Grease Gun Coupler

The AORRZER Grease Gun Coupler stands as a testament to engineering excellence, designed to facilitate efficient and hassle-free greasing operations. Crafted with precision and built to last, this tool promises to redefine your greasing experience.

Features

• Robust Build: Its sturdy design ensures longevity, making it a reliable addition to your toolkit.
• Efficient Locking Mechanism: Equipped with a state-of-the-art 6-jaw bite lock, the coupler offers a secure and tight grip. This innovative feature not only enhances safety but also ensures a seamless greasing process.
• Universal Compatibility: Designed to fit all 1/8″ NPT standard grease gun fittings, this coupler proves versatile.
• User-Friendly: The coupler’s intuitive design allows for one-handed operation, freeing your other hand to manage the grease gun.
• Wide Range of Applications: From automotive repairs and large machinery to farm equipment and more, this coupler proves indispensable.

Applications

Ideal for automotive workshops, industrial settings, agricultural operations, and DIY enthusiasts, the AORRZER Grease Gun Coupler serves as a reliable tool for all greasing needs.

Pros

• Made from high-quality alloy steel for enhanced durability.
• Features a 6-jaw bite lock for a tight and secure connection.
• Compatible with a wide range of grease guns and fittings.
• Allows for one-handed operation, enhancing convenience.

Cons

• Specifically designed for 1/8″ NPT grease gun fittings, may not be suitable for larger fittings without an adapter.

Are All Grease Gun Couplers The Same Size?

No, grease gun couplers come in various sizes and designs to fit different types of grease fittings. It’s essential to ensure compatibility between the coupler and the grease fitting for effective lubrication.

3. LockNlube Grease Gun Coupler – Extra Reach For Recessed Grease Fittings

The LockNLube Grease Gun Coupler XL is meticulously designed to offer an extended reach, making it perfect for those elusive recessed grease fittings. Its robust construction ensures that once it’s locked on, it remains securely attached, eliminating any leaks and ensuring a mess-free experience.

Features

• Impressive Pressure Tolerance: Built to withstand pressures up to 10,000 PSI, this coupler ensures a reliable and consistent grease flow.
• Secure Locking Mechanism: Once attached, it remains steadfast, offering a hands-free operation that won’t disengage even under pressure.
• User-Friendly Release: With its intuitive thumb lever, detaching the coupler from fittings, regardless of pressure, is a breeze.
• Extended Reach: Boasting over 3.5″ of reach, it’s tailor-made for shielded PTO shafts, axles, harvester heads, U Joints, and various other recessed fittings.
• Rebuild Kit Inclusion: For added longevity and value, the coupler comes with a rebuild kit.

Applications

Whether you’re in the agricultural sector dealing with harvester heads and PTO shafts, or in the automotive industry working with axles and U Joints, this coupler proves indispensable.

Pros

• Extended reach reduces the hassle of accessing hard-to-reach fittings.
• Built to withstand high pressures, ensuring longevity.
• Works seamlessly with a wide range of grease guns and fittings.
• The inclusion of a rebuild kit enhances the coupler’s lifespan, providing excellent value for money.

Cons

• It might not be suitable for very tight spaces where a shorter coupler is required.

Where are LockNLube Products Made?

LockNLube products are made in the USA.

Who Makes Lincoln Grease Guns?

Lincoln Industrial Corporation manufactures Lincoln Grease guns. They are a renowned company known for producing a variety of lubrication equipment and systems for automotive, industrial, and agricultural applications.

4. AORRZER Grease Gun Coupler

Introducing the AORRZER Grease Gun Coupler, a game-changer in the world of lubrication equipment. This grease gun coupler promises to simplify your lubrication tasks while ensuring a tight and leak-free connection.

Features

• Robust Build: Constructed with high-grade alloy steel, this coupler ensures longevity and resistance against wear and tear.
• Enhanced Jaw Design: Featuring a unique 6-jaw bite lock mechanism, it provides a secure grip, reducing the risk of slippage during operation.
• Quick Release Spring Flex Hose: Comes equipped with a 12-inch spring flex hose, enabling flexibility and ease of access in hard-to-reach areas.
• User-Friendly Operation: The smooth locking mechanism allows for one-handed operation, freeing up your other hand for additional tasks.

Applications

• Automotive repairs
• Industrial machinery maintenance
• Agricultural equipment lubrication
• Marine applications

Pros

• Ensures fast and efficient grease filling with minimal effort.
• Made with quality materials for long-lasting performance.
• Compatible with various grease guns and fittings.
• Easy one-handed operation enhances user convenience.

Cons

• Compatibility Limitations

How Much Grease Is In 1 Stroke Of A Grease Gun?

1 stroke of a grease gun typically dispenses between 2 to 3 grams of grease.

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5. OKYOUK Minimum Grease Gun Coupler

The OKYOUK Grease Gun Coupler is an innovative tool designed to simplify and enhance the greasing process. With its compact design and robust construction, it promises efficiency and durability, making it a must-have for both professionals and DIY enthusiasts.

Features

• Compact Design: The coupler boasts a minimal diameter, allowing it to fit into tight spaces with ease.
• Easy Operation: Engineered with a single-lever mechanism, it ensures straightforward one-handed use for quick locking and releasing.
• High Pressure Resilience: Built to withstand pressures up to 10,000 PSI, it guarantees a secure fit without any leaks.
• Durable Construction: Crafted from galvanized carbon steel, the coupler promises longevity and resilience against wear and tear.
• Additional Cleaning Tool: The package includes a cleaning tool, ensuring that the coupler remains free from debris and maintains optimal functionality.

Applications

Ideal for a myriad of tasks, the OKYOUK Grease Gun Coupler is perfect for automotive maintenance, agricultural machinery lubrication, and various equipment such as tractors, plows, and seeders.

Pros

• Compact size facilitates use in confined areas.
• High-pressure tolerance ensures reliability.
• Versatile compatibility with multiple grease guns and fittings.
• Durable construction promises long-term usage.
• Cleaning tool aids in maintenance and longevity.

Cons

• As with any tool, proper care and storage are essential to prevent premature wear.

6. AZUNO Pistol Grip Grease Gun

When it comes to heavy-duty maintenance tasks, having the right tools at hand can make all the difference. The AZUNO Pistol Grip Grease Gun emerges as a game-changer, designed meticulously to offer both durability and efficiency. Let’s delve into what makes this tool stand out.

Features

• Durable Build: Made from cold-drawn steel, the canister promises longevity and resilience against high pressures.
• Enhanced Coupler: The 2nd Gen AZUNO coupler is a standout feature, boasting an upgrade to an impressive 12,000 PSI. Its compatibility with 1/8″ NPT grease gun fittings ensures versatility.
• Effortless Loading: Whether you’re using standard 14 oz. cartridges, prefer the convenience of suction, or opt for bulk filling, this grease gun accommodates all with its 3-way loading system.
• Non-Slip Grip: The unique knurling on the barrel not only adds a touch of sophistication but also offers an enhanced grip.

Applications

Versatility is at the heart of the AZUNO Pistol Grip Grease Gun. From automotive and trailers to agricultural and industrial settings, its adaptability shines through.

Pros

• Canister built to handle pressures up to 6500 PSI.
• Smooth retraction mechanism ensures ease of use with just one hand.
• Works seamlessly with all 1/8″ NPT grease gun fittings.
• Backed by AZUNO’s commitment, offering a 1-year warranty for added peace of mind.

Cons

• While the product itself is covered, it’s essential to note that accessories are not included in the warranty.

Azuno Pistol Grip Grease Gun Replacement

To replace the pistol grip on an Azuno Grease Gun:

• Ensure the gun is not pressurized.
• Locate the retaining pin or screw holding the grip.
• Remove the old grip.
• Install the new grip securely.
• Test functionality.

Azuno Pistol Grip Grease Gun Parts

The Azuno Pistol Grip Grease Gun likely consists of the following parts:

• Pistol grip handle
• Grease cartridge holder
• Trigger mechanism
• Grease release nozzle
• Plunger assembly
• Pressure relief valve (if equipped)
• O-ring seals

7. Silver 90 Degree Grease Coupler Gun

Introducing the Silver 90-Degree Grease Coupler Gun Adapter, a versatile tool designed to simplify the often tricky task of greasing hard-to-reach fittings. Crafted with precision and durability in mind, this adapter promises not only efficiency but also longevity in performance.

Features

• Dual Pack: Each package includes two meticulously crafted silver coupler adapters, offering users a backup and ensuring uninterrupted work.
• Efficient Locking Mechanism: Boasting a quick-release feature, these adapters guarantee a mess-free greasing experience by preventing any accidental spills or leaks.
• Robust Build: Constructed from high-grade carbon steel and finished with a corrosion-resistant galvanized surface, these couplers are built to withstand the test of time.
• Spring-Loaded Design: The innovative spring-loaded locking system ensures a tight and secure connection, minimizing the risk of grease leakage.
• Versatile Design: With its 90-degree angle, this coupler excels in accessing tight and awkward spaces.

Applications

Ideal for automotive workshops, agricultural machinery maintenance, industrial equipment greasing, and any scenario where precision greasing is paramount.

Pros

• The 90-degree angle facilitates reaching inaccessible grease points with ease.
• Made from top-tier carbon steel, ensuring longevity and resilience.
• Suitable for a broad array of applications and grease tools.
• The galvanized finish adds an extra layer of protection against rust and wear.
• The spring-loaded design ensures a secure and leak-free connection.

Cons

• Beginners might need a short learning curve to master its full potential, given its specialized design.

How Do You Measure Grease Fittings?

To measure grease fittings, use a caliper or ruler to determine the diameter of the fitting’s threaded section. Ensure accuracy by aligning the tool precisely and noting the measurement in millimeters or inches.

8. Grease Gun Fittings For Tight Spaces: Slippery Pete – 90-Degree Grease Gun Coupler

The Slippery Pete 90 Degree Grease Gun Coupler is meticulously designed for the modern mechanic and DIY enthusiast. Engineered with precision and durability in mind, this coupler revolutionizes the way you grease those hard-to-reach fittings. Its unique 3-jaw design ensures a secure connection every time, even in the tightest of spaces.

Features

• Flexible Application: Whether you’re using a flex hose or a rigid pipe, the Slippery Pete coupler seamlessly adapts to your preferred method of greasing, offering versatility like never before.
• Swift Connection: The innovative 3-jaw design makes snapping on and off grease fittings a breeze, saving you time and effort during maintenance tasks.
• USA Craftsmanship: Each coupler undergoes rigorous inspection and packaging processes right here in the USA, ensuring top-notch quality and reliability.

Applications

Ideal for professionals and DIYers alike, the Slippery Pete 90 Degree Grease Gun Coupler is perfect for automotive, industrial, agricultural, and marine applications.

Pros

• Navigate through cramped spaces with ease, reaching Zerk fittings that were once a challenge.
• Built to withstand the rigors of regular use, ensuring longevity and consistent performance.
• Works effortlessly with both flex hoses and rigid pipes, offering unmatched versatility.

Cons

• While it seamlessly connects to standard grease gun couplers, users must ensure compatibility with their existing equipment.

How Do You Use A 90 Degree Grease Fitting?

To use a 90-degree grease fitting, attach a grease gun to its opening and pump grease into the fitting. The 90-degree angle allows for easier access in tight or confined spaces.

Slippery Pete 90 Degree Grease Gun Coupler Instructions

• Attach Slippery Pete 90 Degree Grease Gun Coupler to the grease gun.
• Ensure a secure connection.
• Use the coupler at a 90-degree angle for hard-to-reach fittings.
• Apply grease as needed.
• Disconnect carefully after use.

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9. Heavy Duty Grease Gun Fittings: Tooluxe 61077l Grease Gun

The Tooluxe 61077L Multi-Function Grease Gun and Lubrication Accessory Kit is a versatile solution designed to cater to the lubrication needs of garages, workshops, and various industrial settings. Meticulously crafted with precision, this kit stands out as an indispensable companion for those who prioritize efficiency and functionality in their lubrication tasks.

Features

• Universal Compatibility: This kit boasts a broad range of lube attachments, ensuring compatibility with most grease gun couplers and guns available in the market.
• Innovative Design: The kit features an intuitive connect design, with a 90-degree swivel coupler and a 360-degree coupler, facilitating ease of use and maneuverability.
• Flexible Reach: Equipped with a 12″ flexible hose accompanied by a spring, the kit allows access to confined and hard-to-reach spots, ensuring thorough lubrication.
• Versatile Attachments: The inclusion of a grease injector needle and a 1-1/2″ needle nose adaptor enhances the kit’s versatility.
• Value Proposition: This kit stands as a testament to affordability without compromising on quality.

Applications

• Automotive Maintenance
• Industrial Machinery Lubrication
• Agricultural Equipment Maintenance
• Marine Equipment Lubrication
• Construction Machinery Maintenance

Pros

• The 12″ flexible hose with a spring facilitates lubrication in tight and inaccessible areas.
• Offering a wide array of fittings at a competitive price point.
• Universal Compatibility

Cons

• May Require Additional Adaptors

What Is The Tooluxe 61077l Grease Gun & Lubrication Accessory Kit?

The Tooluxe 61077L is a grease gun and lubrication accessory kit designed for applying grease to machinery and equipment, ensuring smooth operation and reduced wear.

What Is A Grease Gun Coupler?

A grease gun coupler is a device that attaches to the end of a grease gun hose. It facilitates the connection between the grease gun and the fitting on a machine or equipment, allowing for the precise application of lubricating grease.

Who Makes The Best Grease Gun?

LockNLube is renowned for producing top-quality grease guns, praised for their durability, ease of use, and innovative design. Many professionals and enthusiasts consider them among the best in the market.

What Is A Grease Gun Fittings?

A grease gun fitting is a device used to connect a grease gun to a machine or equipment for injecting grease, ensuring proper lubrication and maintenance.

What Is The Most Common Grease Fitting?

The most common grease fitting is the 1/4″‑28 SAE‑LT. It is widely used in various applications to allow for the lubrication of mechanical components.

What Are The Parts Of A Grease Gun?

A grease gun typically consists of a follower handle, tub, barrel, plunger, spring, and follower rod. These components work together to dispense grease efficiently in various applications.

What Is The Proper Name For Grease Fittings?

The proper name for grease fittings is “Zerk fittings.” These fittings are used for lubrication purposes in machinery and automotive applications to deliver grease to specific points.

What Is A Grease Relief Fitting?

A grease relief fitting is a component in machinery that allows excess grease to escape, preventing over-pressurization and potential damage to seals or bearings.

Are There Different Types Of Grease Fittings?

Yes, there are different types of grease fittings.

• Standard or Zerk Fittings: These are the most common type of grease fittings. They have a threaded body with a ball check mechanism inside.
• Button Head Fittings: These fittings have a flat, button-like head instead of the standard hexagonal head.
• Flush Type Fittings: Flush fittings are designed to be nearly flush with the surface they are mounted on.
• Drive-In Fittings: These are designed to be driven into a pre-drilled hole without the need for threading.
• Specialized Fittings: In addition to the above types, there are various specialized fittings designed for specific applications or to meet specific requirements.

How Does Grease Work?

Grease works by forming a barrier between moving parts, reducing friction and wear. Its thick consistency retains lubrication, ensuring smooth operation in various mechanical applications.

How Do Pressure Relief Grease Fittings Work?

Pressure relief grease fittings have a built-in spring-loaded mechanism that releases excess pressure. When the pressure exceeds a set limit, the fitting allows grease to escape, preventing damage or over-pressurization.

How Do You Use Grease Fittings?

To use them:

• Clean the fitting area.
• Attach a grease gun.
• Pump grease until expelled from the joint.
• Wipe off excess grease.
• Regularly lubricate for optimal performance.

How Do You Use A Grease-Fitting Unblocker?

Here’s a step-by-step guide on how to use a grease-fitting unblocker:

Step 1: Clean the Area

Before inserting the grease-fitting unblocker, wipe the area around the grease fitting to remove any dirt or debris.

Step 2: Select the Right Attachment

Most grease-fitting unblockers come with various attachment heads to fit different sizes of grease fittings. Choose the one that best fits your grease fitting.

Sep 3: Insert the Unblocker

Gently insert the selected attachment head of the grease-fitting unblocker into the grease fitting. Ensure that it fits snugly to create a seal.

Step 4: Apply Pressure

Slowly apply pressure to the grease-fitting unblocker to push out any blockages. You may need to apply more pressure if the blockage is stubborn.

Sep 5: Inspect the Fitting

After using the grease-fitting unblocker, inspect the grease fitting to ensure that it is clear of any blockages and that lubricant can flow freely.

Step 6: Apply Grease

Once the grease fitting is unblocked, you can proceed to apply grease using a grease gun.

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What Is The Difference Between A Grease Zerk And A Fitting?

A grease zerk is a specific type of grease fitting designed for lubrication purposes. A fitting, in a broader sense, refers to any device or component used to connect or join parts together. Grease zerk is a subset of fittings used for lubricating machinery.

How Do I Choose The Right Grease Gun Coupler?- Buying Guide

Here’s a buying guide to help you select the right grease gun coupler:

1. Type of Grease Gun

Ensure that the coupler you choose is compatible with the type of grease gun you have.

2. Pressure Rating

Consider the maximum pressure rating of the coupler to ensure that it can handle the pressure generated by your grease gun.

3. Durability and Material

Look for couplers made from durable materials such as steel or brass, which can withstand the rigors of regular use and provide long-lasting performance.

4. Sealing Mechanism

Choose a coupler with an effective sealing mechanism. A good sealing mechanism ensures a tight and secure connection between the coupler and the grease fitting.

5. Angle and Reach

Consider the angle and reach of the coupler, especially if you need to lubricate hard-to-reach or awkwardly positioned grease fittings.

6. Brand and Reviews

Reading customer reviews and ratings can also provide insights into the performance, reliability, and durability of different couplers.

FAQs

Are grease gun couplers universal?

No, not all grease gun couplers are universally standardized. They can vary in design and size, requiring specific couplers for different grease fittings and applications.

What size is a grease gun coupler?

A grease gun coupler with a ⅛” NPT (National Pipe Thread) fitting has a diameter of approximately 0.405 inches (10.29 mm).

What is the diameter of the Lock N Lube?

The Lock N Lube grease coupler typically has a diameter of 5/8 inch or approximately 16 mm.

How do I choose a lock size?

Choose a lock size based on the object’s thickness or diameter it secures. Ensure the shackle is long enough to fit around and engage the locking mechanism securely.

What is the standard lock diameter?

The standard lock diameter is 2-1/8 inches.

What is lock size?

The size of the lock or latch refers to its physical dimensions, determining how it fits and operates within its intended mechanism or application.

How do I use a grease gun coupler?

Align the coupler with the grease fitting. Push the coupler onto the fitting firmly. Pump the grease gun handle to apply grease. Release and remove coupler carefully.

Conclusion

Choosing the best lock on grease coupler is crucial for efficient and mess-free lubrication. The LockNLube and AORRZER couplers stand out for their durability, innovative features, and versatility. Consider your specific needs and preferences when selecting the best fit for your toolkit.