CL4-20 Bolted Rail Clip (M20)

Through-bolt crane rail clip with M20 bolt. Bearing-type connection for medium duty crane rail and standard rail installations. Adjustable, hot-dip galvanizable, no minimum order.

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Bolted Rail Clip — M20

CL4-20 Through-Bolt Crane Rail Clip

The CL4-20 is an M20 through-bolt crane rail clip designed as a bearing-type connection for medium duty crane rail and standard rail installations. It uses a circular cam mechanism to lock the clip body against the rail foot, providing secure lateral restraint while allowing future adjustment or rail replacement.

The M20 bolt gives the CL4-20 higher load capacity than the CL4-16, making it one of the most widely used bolted clip configurations across the full range of A-series crane rail profiles and standard rail. The clip body and cam can be hot-dip galvanized without reducing lateral resistance ratings, making it suitable for outdoor and corrosive environments.

The clip top incorporates a vulcanized synthetic pressure block for rail retention and load absorption. Installation uses a standard M20 hex bolt, nut and hardened washer. The modular pressure block can be replaced without replacing the entire clip top assembly.

CL4-20 M20 bolted crane rail clip supplied by Inform Rail Australia
M20
Bolt Size
Bolted
Clip Type
Bearing
Connection
Yes
Galvanizable
Adjustable
Alignment
Compatible Rail Profiles

Rail Profiles the CL4-20 Suits

The CL4-20 suits a wide range of crane rail profiles from A45 through to A120, as well as standard rail profiles including 41kg and 47kg. It is one of the most versatile bolted clip configurations in the range. For applications requiring extended lateral adjustment, the CLX-20 may be more appropriate. Send us your rail profile and we'll advise on the right clip.

A45
Crane Rail
A55
Crane Rail
A65
Crane Rail
A75
Crane Rail
A100
Crane Rail
A120
Crane Rail
41kg
Standard Rail
47kg
Standard Rail
Applications

Where the CL4-20 is Used

The CL4-20 suits installations across the full range of A-series crane rail where an M20 through-bolt bearing-type connection is appropriate. Its versatility across crane rail sizes makes it one of the most commonly specified bolted clips for overhead crane runway installations in Australia.

Primary Use
Medium duty overhead crane runways across the full A-series crane rail range
Rail Type
Crane rail A45 to A120 and standard rail 41kg and 47kg
Installation Type
New installations and replacement works where bolt adjustability is required
Environment
Indoor and outdoor — clip body can be hot-dip galvanized for corrosive environments
Maintenance
Pressure block is replaceable without replacing the full clip top assembly
Not sure?
Send us your rail profile, bolt size and application and we'll confirm the right clip. Get in touch
Crane Rail Clip Range

Other Bolted Rail Clips

Bolted
CL3-12
M12 through-bolt, light duty
Bolted
CL4-16
M16 through-bolt, light to medium duty
Bolted
CLX-20
M20 extended adjustment range
Bolted
CLX-24
M24 heavy duty bolted clip

Also available: M71, M120 and M165 welded rail clips.

FAQ

CL4-20 Rail Clip: Common Questions

What is the CL4-20 crane rail clip used for?
The CL4-20 is an M20 through-bolt crane rail clip for medium duty crane rail and standard rail installations. It suits the full range of A-series crane rail from A45 to A120 as well as 41kg and 47kg standard rail, making it one of the most widely specified bolted clips for overhead crane runway installations in Australia.
What bolt size does the CL4-20 use?
The CL4-20 uses a standard M20 hex bolt with nut and hardened washer. The M20 bolt gives it higher load capacity than the CL4-16 (M16) and CL3-12 (M12). For applications requiring extended lateral adjustment at the same bolt size, the CLX-20 is available. For heavier duty applications, the CLX-24 (M24) is also available.
What is the difference between the CL4-20 and CLX-20?
Both are M20 bolted crane rail clips using a bearing-type connection, but the CLX-20 has an extended lateral adjustment range. The CL4-20 is suited to standard installations with normal alignment tolerances, while the CLX-20 is preferred where wider lateral adjustment is needed during installation or re-alignment works. Send us your project details and we'll advise on which is more appropriate.
Can the CL4-20 be hot-dip galvanized?
Yes. The CL4-20 clip body and cam can be hot-dip galvanized without reducing the lateral resistance rating of the clip. This makes it suitable for outdoor installations, coastal environments and other applications where corrosion protection is required.
How does the modular pressure block work?
The clip top incorporates a vulcanized synthetic pressure block that sits between the clip and the rail head. When the pressure block wears, it can be replaced without replacing the entire clip top assembly, reducing maintenance cost over the life of the installation.
How do I know if the CL4-20 is the right clip for my application?
The CL4-20 is one of the most versatile bolted clips in the range, suitable across the full A-series crane rail profile from A45 to A120. If your application requires extended lateral adjustment, the CLX-20 may be more appropriate. For heavier duty applications with higher lateral loads, the CLX-24 is available. Send us your rail profile, application details and any drawings and we'll advise on the right clip type, size and spacing.

Need CL4-20 Rail Clips?

Send us your rail profile, application details or project drawings and we'll come back with a practical supply option.

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