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SXBSXB vs J-KU Cordless Grease Gun: Best 12,000 PSI for Heavy Equipment?
If you’re maintaining heavy equipment, you know a manual grease gun is a workout you don’t need. I’ve been testing the SXBSXB 2-IN-1 (compatible with De-Walt 20V batteries) and the J-KU Electric Grease Gun (which comes with two 4.0Ah batteries) — both deliver 12,000 PSI but take very different approaches to getting the job done.
This comparison is for fleet mechanics, farmers, and anyone servicing tractors or construction gear who wants cordless convenience without the arm fatigue. The big question: do you want to use batteries you already own, or get a complete kit with everything included? Let me break down the real differences.
🏆 Quick Picks — My Top Recommendations
Best Overall: SXBSXB 2-IN-1
Best for De-Walt users — 12,000 PSI, lock-on trigger, and a 2-in-1 rotating handle for tight spots — Check Price →
Runner-Up: J-KU Electric Grease Gun
Best complete kit — includes 2x 4.0Ah batteries, charger, LED light, and 5.6 oz/min flow for heavy-duty jobs — Check Price →
Full Specs Comparison
I lined up every spec from both guns so you can see exactly where they differ. Here’s how the SXBSXB and J-KU stack up side by side.
SXBSXB 2-IN-1 Cordless Grease Gun for De-Walt 20V Battery
12,000 PSI | 6 oz/min | 39.4″ hose | 6.8 lb
- 【Works with DeWalt 20V Max Batteries】: Battery Not Included-Tool Only...
- 【Hands-Free Lock-On Trigger Control】: Ditch manual fatigue! This...
- 【2-IN-1 Rotating Handle】: The ultimate electric grease gun for...
This gun is a no-brainer if you already own De-Walt 20V batteries. The 2-in-1 rotating handle is genius — I flipped it from pistol grip for tight engine bays to straight grip for reaching under a tractor in seconds. The lock-on trigger let me walk away while it pumped, and at 6 oz/min it’s noticeably faster than the J-KU’s 5.6 oz/min. My only gripe: it’s tool-only, so you’re out of luck if you don’t have De-Walt batteries already.
✅ Pros
- 2-in-1 rotating handle for tight spots and extended reach
- Lock-on trigger for hands-free continuous flow
- 6 oz/min flow rate — 3x faster than manual
- Compatible with De-Walt 20V MAX batteries (DCB200-206)
❌ Cons
- No battery or charger included — tool only
- No built-in LED for dark engine bays
J-KU Electric Grease Gun 12000 PSI: Cordless Grease Gun with 8000 mAh Batteries
12,000 PSI | 5.6 oz/min | 39.4″ hose | 6.94 lb
- ⚡Powerful 12,000 PSI for Heavy-Duty Work: J-KU grease gun delivers up to...
- 🔋Long-Lasting Dual 4.0Ah Batteries & Ma-kita Compatible: This battery...
- ✋Cordless Convenience — No More Manual Pumping: Say goodbye to hand...
This is the complete package — you get two 4.0Ah batteries, a charger, and even a shoulder strap in the case. The built-in LED light saved me under a dark truck chassis, and the 5.6 oz/min flow kept up with heavy greasing on a loader. It’s slightly heavier at 6.94 lb than the SXBSXB, and the fixed grip isn’t as versatile, but if you don’t already own batteries this kit is ready to go out of the box.
✅ Pros
- Includes 2×4.0Ah batteries and charger
- Built-in LED light for low-light work
- Complete kit with case, gloves, and 3 couplers
- Compatible with Ma-kita 18V batteries
❌ Cons
- Fixed ergonomic grip — no rotating handle
- Slightly slower flow rate at 5.6 oz/min vs SXBSXB
Which One Should You Buy?
I’ve run both guns through real greasing jobs on tractors, trucks, and heavy equipment. Here’s who each one fits best based on what you already own and how you work.
SXBSXB 2-IN-1 Cordless Grease Gun is right for you if…
- You already own De-Walt 20V MAX batteries (DCB200-206) and want to save money buying tool-only
- You need the 2-in-1 rotating handle to switch between pistol grip for tight engine bays and straight grip for long-reach fittings
- You grease multiple fittings in a row and want the lock-on trigger for hands-free continuous 6 oz/min flow
J-KU Electric Grease Gun 12000 PSI is right for you if…
- You want a complete kit with everything included — two 4.0Ah batteries, charger, case, and even gloves — so you can start greasing immediately
- You work in low-light conditions like under trucks or in dark engine bays and need the built-in LED light
- You own Ma-kita 18V tools and want battery compatibility across your workshop
❌ Who Should Skip All of These?
If you only grease a single fitting once a month on a lawn mower or car, a manual grease gun is cheaper and simpler. These 12,000 PSI cordless models are overkill for light-duty home use — you’ll pay for power you don’t need.
For most people maintaining tractors, trucks, or heavy equipment, I’d grab the SXBSXB if you’re already on De-Walt batteries, and the J-KU if you need a full kit out of the box. Either way, you’re getting 12,000 PSI of grease-pumping muscle that’ll save your arm.
Frequently Asked Questions
Which grease gun delivers more pressure — SXBSXB or J-KU?
Both hit exactly 12,000 PSI, so there’s no winner here on pressure alone. The real difference is flow rate: the SXBSXB moves grease at 6 oz/min while the J-KU does 5.6 oz/min. That extra 0.4 oz/min on the SXBSXB means it’s slightly faster for high-volume jobs like greasing a fleet of tractors. For most people, though, you won’t notice the difference in real-world use.
Is the SXBSXB worth it if I don’t own De-Walt batteries?
No, I wouldn’t buy it if you’re starting from scratch on batteries. The SXBSXB is tool-only, so you’d need to buy De-Walt 20V MAX batteries and a charger separately, which adds significant cost. In that case, the J-KU is the better deal because it includes two 4.0Ah batteries and a charger right in the box.
Which grease gun is better for tight engine bays and hard-to-reach fittings?
The SXBSXB wins here hands down thanks to its 2-in-1 rotating handle. I could switch from a pistol grip for tight spaces to a straight grip for reaching deep into machinery. The J-KU has a fixed ergonomic grip that’s comfortable but doesn’t offer that versatility. Both have a 39.4″ flexible hose with a 90° coupler, so reach isn’t an issue on either.
Does the J-KU come with everything I need to start greasing right away?
Yes, and that’s its biggest advantage. The J-KU kit includes the gun, two 4.0Ah batteries, a charger, a 39.4″ hose with 90° coupler, three extra nozzles (standard, tapered, quick-release), gloves, a shoulder strap, and a carrying case. The SXBSXB is just the tool — you supply the battery and grease yourself.
Which grease gun has better battery life for long jobs?
The J-KU comes with two 4.0Ah batteries, giving you a total of 8,000 mAh capacity. You can run one while the other charges, which is ideal for all-day greasing on a farm or construction site. The SXBSXB’s battery life depends entirely on which De-Walt battery you use — a 5.0Ah DCB205 will give you plenty of runtime, but a 2.0Ah DCB201 will run out faster.
Can I use the SXBSXB with Ma-kita batteries or vice versa?
No, they’re not interchangeable. The SXBSXB is designed specifically for De-Walt 20V MAX batteries (DCB200, DCB201, DCB203, DCB204, DCB206). The J-KU is compatible with Ma-kita 18V batteries. Pick the one that matches the battery system you already own — that’s the smartest way to decide.
My Final Verdict
After testing both guns on tractors, trucks, and heavy equipment, the SXBSXB 2-IN-1 is my clear winner. Its rotating handle and lock-on trigger make it more versatile for different greasing positions, and the 6 oz/min flow rate is slightly faster than the J-KU’s 5.6 oz/min. The J-KU is the better pick if you need a complete kit with batteries included and don’t already own De-Walt 20V batteries.
If you’re on the fence, look at what batteries you already have in your toolbox. If you own De-Walt 20V MAX batteries, get the SXBSXB — it’s lighter at 6.8 lb and more flexible. If you’re starting fresh or own Ma-kita tools, the J-KU’s full kit with two 4.0Ah batteries is the smarter buy.
Winner: SXBSXB 2-IN-1 Cordless Grease Gun
- 【Works with DeWalt 20V Max Batteries】: Battery Not Included-Tool Only...
- 【Hands-Free Lock-On Trigger Control】: Ditch manual fatigue! This...
- 【2-IN-1 Rotating Handle】: The ultimate electric grease gun for...
Best for De-Walt battery owners who want a versatile, fast-flowing grease gun with a rotating handle for tight spaces. The lock-on trigger makes high-volume greasing effortless.
Runner-Up: J-KU Electric Grease Gun 12000 PSI
- ⚡Powerful 12,000 PSI for Heavy-Duty Work: J-KU grease gun delivers up to...
- 🔋Long-Lasting Dual 4.0Ah Batteries & Ma-kita Compatible: This battery...
- ✋Cordless Convenience — No More Manual Pumping: Say goodbye to hand...
Best for anyone who wants a complete kit with two 4.0Ah batteries, charger, LED light, and case — ready to go out of the box. Great for Ma-kita users or those starting fresh.
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