Macnaught KR Pressurite Grease Gun
Available
The Macnaught KR PRESSURITE is a grease gun only, made to use with the K3/K4 and K6/K7 hand-operated grease pumps (Macnaught lists it with the K4 SUPERLUBE and K7 MINILUBE systems). It is not a stand-alone gun. It has no barrel to fill, because grease comes from the pump through a hose at up to 1034 kPa (150 psi) (manufacturer-stated).
A switch gives you two settings. Keep it on HIGH VOLUME for normal greasing. Move it to HI-PRESSURE to clear a blocked or seized nipple, where the maker states up to 10,000 psi (69 MPa). On the K4 and K7 systems the maker lists 0.45g per shot on high pressure and 1.25g per shot on high volume. The maker recommends NLGI 2 grease or lighter. NLGI 2 is the common general-purpose grease grade. Choose the KR if you need a replacement gun for one of these pumps. For a complete hand-held gun with its own barrel, see the FLEXIGUN and LEVERGUN range (manufacturer-stated).
Where this product is used
- Replacing the gun on a K4 SUPERLUBE or K7 MINILUBE greasing system (manufacturer-stated)
- Switching between high volume and high pressure at the nipple (manufacturer-stated)
- Workshop and plant greasing from a pail or container pump (manufacturer-stated)
Features
- Grease gun only, for K3/K4 and K6/K7 hand-operated pumps (manufacturer-stated)
- Hose-fed from the pump at up to 1034 kPa (150 psi) (manufacturer-stated)
- High pressure setting up to 10,000 psi (69 MPa) to clear blocked nipples (manufacturer-stated)
- 0.45g per shot on high pressure and 1.25g per shot on high volume on the K4 and K7 systems (manufacturer-stated)
- Switch between HIGH VOLUME and HI-PRESSURE (manufacturer-stated)
- Recommended grease NLGI 2 or lighter (manufacturer-stated)
- Fitted with a KY coupler and a KH23s extension tube (manufacturer-stated)
- Service kits available: KR-1K overhaul kit and KR-2K piston kit (manufacturer-stated)
Key specifications
| Specification | Detail |
|---|---|
| Brand | Macnaught |
| Model | KR PRESSURITE grease gun |
| Maker part number | KR |
| Gun type | Hose-fed, hand-operated, two settings |
| Suits pumps | K3/K4 and K6/K7 hand-operated pumps |
| High pressure setting | Up to 10,000 psi (69 MPa) |
| Hose feed pressure | Up to 1034 kPa (150 psi) |
| Output on K4 and K7 systems | 0.45g per shot high pressure, 1.25g per shot high volume |
| Recommended grease | NLGI 2 or lighter |
| Coupler | KY |
| Service kits | KR-1K overhaul kit, KR-2K piston kit |
Specification values are manufacturer-stated (Macnaught product page, 2026 catalogue (p19, p21, p38) and KR instruction manual, part number KR).
Supplied with
- KR PRESSURITE grease gun
- Not included: pump, hose or container (the gun works with K3/K4 and K6/K7 pumps)
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