Screw-In Grease Cartridges Explained: What They Are & When to Use Them

Grease cartridges are available in different formats, and while standard 400g cartridges are the most widely used in the UK, some systems use screw-in (threaded) grease cartridges, often referred to as Lube Shuttle cartridges.

Understanding the difference between these types can help you choose the right setup for your equipment and avoid compatibility issues.

What Is a Screw-In (Lube Shuttle) Grease Cartridge?

A screw-in grease cartridge — commonly known as a Lube Shuttle cartridge — is designed to screw directly into a compatible grease gun, rather than being inserted into a barrel like a standard cartridge.

This creates a more sealed connection between the cartridge and the grease gun, reducing mess during changes and handling.

How Are They Different from Standard Grease Cartridges?

Standard 400g Cartridges

• Inserted into the grease gun barrel
• Used with most manual grease guns
• Widely available and commonly used across agriculture and workshops

Screw-In (Lube Shuttle) Cartridges

• Screw directly into the grease gun
• Require a compatible grease gun or adaptor
• Designed for a more enclosed cartridge system

When Are Screw-In (Lube Shuttle) Cartridges Used?

Screw-in or Lube Shuttle systems are often used where:

• A cleaner, more controlled cartridge change is preferred
• Equipment is already set up for threaded cartridges
• Operators want a sealed system with less handling of grease

They are commonly used in workshop environments and by operators who prefer a threaded cartridge system.

Are Screw-In Cartridges Better Than Standard Ones?

Not necessarily — they are simply different systems designed for different applications.

For most agricultural and general workshop use:
👉 Standard 400g grease cartridges remain the most common and practical choice

Screw-in (Lube Shuttle) cartridges are typically used where:

• Equipment is already designed for them
• A threaded system is preferred
• A cleaner cartridge change is beneficial

Using Screw-In Cartridges with Standard Grease Guns

If you’re interested in using Lube Shuttle or screw-in cartridges but already have a standard grease gun, it’s often possible to adapt your setup.

👉 Screw-in cartridge adaptors allow you to use threaded cartridges with compatible grease guns, without needing to switch to a completely different system.

This is useful if:

• You want more flexibility between cartridge types
• You’re testing a Lube Shuttle system
• You use multiple grease setups across different machines

We stock screw-in grease cartridge adaptors, making it easy to integrate these systems into your existing equipment.

Choosing the Right Grease Cartridge System

The most important factor is compatibility:

• If your grease gun uses standard cartridges, stick with 400g cartridges
• If your grease gun is designed for Lube Shuttle or screw-in cartridges, you’ll need threaded cartridges
• Adaptors can be used in some cases to allow compatibility between systems

Grease Cartridges Available

We supply a range of standard 400g grease cartridges suitable for agricultural machinery, plant equipment, and workshop use.

We also offer options and accessories for screw-in (Lube Shuttle) cartridge systems, depending on your setup.

Final Thoughts

Screw-in (Lube Shuttle) grease cartridges offer an alternative to standard cartridges, but the right choice depends on your equipment and how you prefer to work.

For most users, standard cartridges remain the go-to option, while screw-in systems are suited to specific setups and preferences.