The best air grease guns, compared.
Top pick: Draper 70836 air grease gun (400 cc) – Highest score in the set, and the only cartridge pistol, at about £30.99 with a stated warranty. Best value: Draper 70836 air grease gun (400 cc) – The value score is also highest on this listing: about £30.99 for a 400 cc gun with bulk loading and a warranty line. Updated 20 October 2026.
An air grease gun uses compressed air from a workshop compressor to push grease into a nipple, so you are not working a lever. UK catalogues use that name for a handheld pistol on a 400 g cartridge or a bulk fill, and for a wheeled keg pump that feeds a control gun through a hose. You tell those machines apart by drum size, a follower plate and hose length, not by the word gun in the title. The kegs suit a bay that buys drums. A typical listing does not state an air inlet or a working air-pressure window. Which specs decide the purchase is set out in the [air grease gun buying guide](/hub/compressors/air-grease-gun/sub/air-grease-gun-buying-guide). You separate a usable pistol from a vague listing by the air inlet, the printed air-pressure window, a bleed valve, and an outlet pressure quoted for that model.
An air grease gun uses compressed air from a workshop compressor to push grease into a nipple, so you are not working a lever.
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Personal buying guide
Question 1 of 2
What do you fill?
The Draper 70836 is a handheld air grease gun listed at 400 cc and 1 kg, at about £30.99 on amazon.co.uk. The bullets add two delivery tubes, bulk loading, air bleed valves, and a plunger rod and handle, which is the hardware a cartridge or a bulk fill needs before you clip on an airline. The same bullets state a Draper 12 months parts and labour warranty. The listing does not give a maximum outlet pressure, an air-inlet thread, or a working air-pressure window, so those numbers are not part of this amazon.co.uk capture. It shows 5.0 from one rating and no review text, which is too small a sample to judge leaks, couplers, or how the trigger behaves. At 1 kg it is the light tool in this set, set against wheeled pumps of 11 to 15.1 kg. For a few machines and a 400 cc fill it is the top pick and the best value here. It is the wrong buy if you need a keg and a 3.7 m hose.
Pros
Cons
Best for: You already have a compressor and you grease a few machines from a 400 cc cartridge or a bulk fill.
Less suitable: You need a wheeled keg, a 3.7 m hose, or an outlet pressure printed on the amazon.co.uk listing.
Specifications
Common questions
What grease capacity does the listing state?
The amazon.co.uk title states 400 cc.
What comes with the gun?
The included-components line says one air grease gun. The bullets also list two delivery tubes, bulk loading and air bleed valves, and a plunger rod and handle.
Does the listing mention a warranty?
The bullets state a Draper 12 months parts and labour warranty.
The KATSU 481134 holds 40 litres and is listed at about £119.99, with a drum of 355 mm diameter and 430 mm height and an item weight of 15.1 kg. The bullets repeat the 3.7 m hose, the flexible grease gun, and the 450 bar (6,500 psi) maximum used on the smaller KATSU pumps. One rating at 5.0 appears on the listing, with no review text, so that star does not describe a coupler, a leak, or a compressor match. On this capture its Best Sellers Rank is 73,689 in Automotive, ahead of the other two KATSU rows, which is a popularity signal and not a test. Inlet air pressure and airflow are still absent. At £7 more than the 20 litre model you get twice the drum, which is the stronger keg buy in this set if you will use the capacity. It is the wrong machine if your grease still arrives as a 400 g cartridge.
Pros
Cons
Best for: You work through kegs and you want the most grease per pound among these three pumps.
Less suitable: You grease occasionally from a cartridge, or you need the inlet-air figure the listing does not give.
Specifications
Common questions
What capacity does the listing state?
40 litres. The drum size stated is 355 mm diameter and 430 mm height.
Does it include a hose and a gun?
The title includes a 12 ft hose and a grease gun. The bullets state a 3.7 m pneumatic hose and a flexible grease gun.
How many reviews are on the listing capture?
One rating at 5.0. There is no review text on the listing.
The KATSU 481125 is a wheeled 12 litre air-operated grease pump at about £87.99, with a 3.7 m hose, a flexible grease gun, and a stated maximum of 450 bar (6,500 psi). The drum is 220 mm in diameter and 340 mm high, and the listed weight is 11 kg, so you roll it across a bay rather than hang it beside a cartridge gun. The listing points it at vehicles and machinery in general and does not name a model-by-model fitment. Inlet air pressure, airflow, and pressure ratio are missing from the amazon.co.uk capture, and there is no warranty line. It is the only row here with more than one rating: 3.8 from three reviews, and the listing capture has no review text, so the stars flag a problem without saying what it was. The package measures 82.5 x 36 x 30 cm. Choose it when 12 litres is the keg you already use. Leave it if a 400 cc cartridge would cover the nipples you grease.
Pros
Cons
Best for: You grease from a small keg and you want the lightest wheeled pump in this set.
Less suitable: You only grease a few nipples from a cartridge, or you need an airflow figure before you buy.
Specifications
Common questions
What can it be used on, according to the listing?
The listing says lubrication and maintenance of various vehicles and machinery. It does not name a model-by-model fitment.
How long is the hose?
The bullets state a 3.7 m pneumatic hose, and the title says 12 ft.
What maximum pressure does the listing state?
Maximum pumping pressure is stated as 450 bar / 6500 psi. Inlet air pressure is not on the listing.
The KATSU 481133 is the 20 litre wheeled pump, listed at about £112.99, with the same 3.7 m hose, flexible gun, and 450 bar maximum as the 12 and 40 litre models. The drum is 300 mm across and 350 mm high, and the item weight is 13.9 kg. The title calls it portable because the bullets mention a steel structure with wheels, which means you can roll it on a workshop floor, not carry it up a ladder. The amazon.co.uk capture has no customer-review line, so there is no star rating to read. It costs £25 more than the 12 litre pump and only £7 less than the 40 litre pump, which is a weak reason to pick the middle size unless a 20 litre keg is what you already buy. Inlet pressure, airflow, and warranty are not on the listing.
Pros
Cons
Best for: You already buy 20 litre kegs and you want this hose length on a wheeled pump.
Less suitable: You are choosing a drum size from scratch, or you want a star rating before you spend about £113.
Specifications
Common questions
Is it described as portable?
Yes. The title says portable, and the bullets say a steel structure with wheels.
How long is the hose?
The bullets state a 3.7 m hose, and the title says 12 ft.
Is there a star rating on the listing capture?
No customer-review line was on the amazon.co.uk capture, so there is no star rating to quote.
Scores are out of 100 from the amazon.co.uk captures in this set, dated for this page on 20 October 2026. There is no lab test. One rating is not treated as a verdict. The weights below sum to 100, and a missing inlet, outlet pressure or star line lowers the score instead of being filled from a maker page.
Listing completeness
30%Capacity, delivery hardware, outlet pressure, inlet or working pressure, a bleed or bulk method, and a warranty line. A figure that is only on a maker page is not copied into an empty amazon.co.uk field.
Review evidence
25%A capture with no star line scores nothing here. Otherwise the score uses the star average and the review count, and the count is capped so one or three ratings cannot carry the page.
Job fit in this set
25%A handheld cartridge pistol fits a few machines. The smallest keg fits a short drum. The largest keg fits a bay that will use the capacity. A mid keg with no reviews, priced next to the 40 litre model, fits a narrower case.
Price against the job
20%The £30.99 pistol with a stated warranty is the value case for cartridges. Among kegs, twice the drum for £7 more than the 20 litre model is the stronger buy if you will use the capacity.
Separate a cartridge pistol from a wheeled keg before you compare prices. Then check the air the model asks for, the inlet thread, and whether the listing actually prints those figures.
An air grease gun is a compressed-air grease pump for someone in the UK who already has a workshop compressor and wants to grease nipples without working a lever. UK catalogues use that name for a handheld pistol on a 400 g cartridge or a bulk fill, and a different machine for a wheeled keg pump that feeds a control gun through a hose. You separate a usable pistol from a vague listing by the air inlet, the printed air-pressure window, a bleed valve, and an outlet pressure quoted for that model.
The Draper and the 40 litre pump each show 5.0 from one rating, with no review text. The 20 litre pump has no star line. That is not evidence of couplers, leaks or trigger feel.
Cited airflow runs from about 1 cfm to a retailer line of 4–6 cfm. The plate on the model wins. These amazon.co.uk captures do not state airflow, so a broad cfm claim is not a result for these four rows.
Do not force NPT into a BSP inlet. Maker pages for the Draper and Sealey pistols name BSP. If the gun will not pump, bleed it before you call it dead, and stop the trigger when fresh grease shows.
Choose a pistol for a 400 g cartridge or a bulk fill, and a wheeled lubricator for a 12, 20 or 40 litre keg. Manual and cordless guns are a different category. The Draper 70836 is the handheld row on this page: 400 cc, 1 kg, two delivery tubes, bulk loading and an air bleed, at about £30.99, with a 12 months parts and labour line on the listing. The KATSU rows are wheeled pumps with a 3.7 m hose and a flexible gun.
Match the gun to the compressor you have. Do not use one cfm figure for every air grease gun. Maker pages for pistols often show about 30–150 psi, with 90 psi (6 bar) recommended on some instructions, and airflow from about 1 cfm to a retailer line of 4–6 cfm. The plate on the model wins. Do not trust a broad 4–6 cfm claim against a plate that says 1 cfm. These four amazon.co.uk captures do not state inlet pressure or airflow.
Three typical situations, each with a recommendation from this comparison.
You grease a few machines and you already have an airline. A 400 g NLGI 2 cartridge, or a bulk fill, is enough. The Draper 70836 is the pistol in this set, at about £30.99 and 1 kg, with bulk loading and an air bleed on the listing.
You grease several vehicles a day and you will use a large drum. The KATSU 40 litre pump is about £119.99, £7 more than the 20 litre model, with the same 3.7 m hose and a stated 450 bar maximum. The trigger has no feel, so stop when fresh grease appears.
You already buy 12 litre kegs and you want the lightest wheeled pump here. The KATSU 481125 is 11 kg at about £87.99, with a 3.7 m hose. It is 3.8 from three ratings and the listing does not state inlet air or a warranty.
On these amazon.co.uk listings the Draper 70836 is the top pick and the best value: it is the only 400 cc cartridge pistol, at about £30.99 and 1 kg, with delivery tubes, bulk loading, an air bleed and a stated 12 months warranty. Choose the KATSU 40 litre pump, at about £119.99, when you will use a keg and you want the most grease per pound in this set. The 12 litre pump is the lightest trolley. The 20 litre pump costs almost as much as the 40 litre model and has no star line. None of the four captures prints the air inlet or the working pressure.
Draper 70836 air grease gun (400 cc)
Highest score in the set, and the only cartridge pistol, at about £30.99 with a stated warranty.
Draper 70836 air grease gun (400 cc)
The value score is also highest on this listing: about £30.99 for a 400 cc gun with bulk loading and a warranty line.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources and maker pages from the research digest, checked for this page on 20 October 2026. Listing prices, stars and review counts are amazon.co.uk figures from the comparison files.
This page contains affiliate links to amazon.co.uk with the tag pcuk26-21. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines used for this comparison. We did not run a lab test.
