Key Takeaways
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Lock-N-Lube grease couplers lock onto standard Zerk fittings with a thumb lever, creating a leak-proof seal rated to 10,000 PSI.
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Proper greasing is essential for farm equipment bearings, bushings, pivot joints, and drivetrains in dusty, wet, and gritty field conditions.
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Lock-N-Lube's one-handed operation and anti-blowout design reduces maintenance time and grease waste compared to traditional couplers.
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Compatible with all standard grease gun types including pneumatic, pistol-grip, lever, and battery-operated models.
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Royal Brass and Hose has supported agriculture professionals for over 70 years and stocks a full range of Lock-N-Lube products and greasing accessories.
Maintaining farm equipment isn't optional, it's essential. Whether you're running a row crop operation, managing livestock, or working hay fields, uptime is everything. And proper lubrication is one of the easiest ways to prevent breakdowns and extend the life of your machinery.
But traditional grease couplers often make routine maintenance more frustrating than it needs to be. Leaky seals, grease blowouts, and couplers that slip off Zerk fittings under pressure can slow you down and create costly cleanup.
What Is the Lock N Lube Grease Coupler?
The Lock N Lube grease coupler is a patented, high-pressure grease fitting connector that clips securely onto standard Zerk fittings. With a simple thumb lever, it locks in place and creates a leak-proof seal that prevents messy blowouts, even at pressures up to 10,000 pounds per square inch (PSI).
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Spring-loaded jaw mechanism that locks onto fittings and stays put
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Integrated check valve to prevent back-pressure blowouts
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Compatible with all standard grease guns, including pneumatic, battery-operated, and manual
Shop Standard Lock-N-Lube Coupler
Shop Extra Long Lock-N-Lube Coupler
Why Is Greasing Critical for Farm Equipment?
Farm equipment runs hard, and often in dusty, wet, or gritty conditions. Bearings, bushings, pivot joints, and drivetrains need consistent lubrication to reduce friction and prevent corrosion. Without it, metal-on-metal wear can lead to premature failure and expensive repairs.
What Farm Equipment Requires Regular Greasing?
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Tractors: Front-end loaders, steering arms, 3-point hitch pivots, and drivetrains
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Implements: Balers, cultivators, disk harrows, planters, and sprayers
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Harvesters: Combine heads, augers, conveyors, and chopper blades
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Livestock equipment: Feed mixers, manure spreaders, and gates with moving joints
What Are the Benefits of Using Lock-N-Lube in Agricultural Maintenance?
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Zero-leak, high-pressure connection: With Lock N Lube, the coupler locks tightly onto the Zerk fitting and seals instantly, even under extreme pressure. That means no backpressure leaks, wasted grease, or blowouts.
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One-handed operation for hard-to-reach fittings: Tight spaces are common in today's equipment. Lock N Lube eliminates the need to hold the coupler in place. Once it's locked on, your hands are free to pump grease.
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Reduces maintenance time and waste: By preventing leaks and coupling issues, Lock N Lube ensures more of your grease gets into the joint, reducing how often you need to service equipment.
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Extends the life of high-wear components: Proper lubrication extends service life of:
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Power take-off (PTO) driveline components
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Linkages and pivot assemblies
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Wheel bearings
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Implement drive chains
What Grease Guns Work with Lock N Lube?
Heavy-duty lever grease guns:
LockNLube Model LNL151 Heavy-Duty Lever Grease Gun
Pistol-grip grease guns:
LockNLube Model LNL153 Heavy-Duty Pistol Grip Grease Gun
Battery-powered grease guns:
DEWALT Model DCGG571 Cordless Grease Gun
What Other Greasing Accessories Improve Your Workflow?
Why Buy Lock N Lube from Royal Brass and Hose?
At Royal Brass and Hose, we've supported agriculture professionals for over 70 years with the parts and expertise needed to keep machines running. We stock a full line of greasing equipment, fluid power systems, ag hoses, and custom kits, with regional warehouses across the Southeast to get products to you fast.
Browse our full selection of Lock-N-Lube products and accessories.
Get Started: Upgrade to Lock N Lube Today
Stop fighting with stubborn couplers and messy blowouts. Switch to a better way to grease with Lock-N-Lube products, trusted by farmers, ranchers, and mechanics across the country.
Need Help?
Contact us or call 800-669-9650 for product recommendations, quote requests, or custom solutions.
Our locations include Knoxville, TN; Marietta, GA; Orlando, FL; Charlotte, NC; Little Rock, AR; Fort Worth, TX; Benton, IL; Madisonville, KY; Princeton, WV; Birmingham, AL; and Calvert City, KY.
Frequently Asked Questions
A Zerk fitting (also called a grease fitting or grease nipple) is a small metal valve installed on equipment joints and bearings to accept grease under pressure. Lock-N-Lube couplers are designed to lock onto standard Zerk fittings securely without slipping or leaking.
Standard couplers can slip off Zerk fittings under pressure, causing blowouts and wasted grease. Lock-N-Lube's spring-loaded jaw mechanism locks the coupler in place with a thumb lever and includes an integrated check valve to prevent backpressure leaks.
Lock-N-Lube couplers are rated for pressures up to 10,000 PSI, making them suitable for the most demanding high-pressure greasing applications on farm and industrial equipment.
Yes. Lock-N-Lube couplers are compatible with all standard grease guns, including manual lever guns, pistol-grip guns, pneumatic guns, and battery-powered cordless models.
Royal Brass and Hose stocks Lock-N-Lube couplers, grease guns, relocation blocks, extended hoses, and fitting kits. Browse our Lock-N-Lube catalog, or contact our team for a custom maintenance kit recommendation.
