Atlas Copco ACNS Hydraulic Nut Splitters

Atlas Copco ACNS Hydraulic Nut Splitters

The Atlas Copco ACNS series is designed to split seized or hard-to-remove nuts in a controlled way.

It is a practical choice for maintenance, dismantling, and assembly work in industrial environments where a hydraulic tool with size-specific fit is needed.

Key Features

• Multiple nut ranges: The family covers several A/F Across Flats size ranges, from 17.5–30.0 mm up to 50.8–80 mm.
• Defined working dimensions: Each model has specified dimensions for clear width, stud diameter, cutting height, and nose clearance.
• Application-based selection: You can choose the tool according to nut size and available access instead of using one general-purpose solution.
• Controlled splitting: The hydraulic design is intended for controlled nut splitting during removal of stuck or worn fasteners.
• ACNS family: This is the Atlas Copco ACNS family, so the right model can be selected within the same series based on dimensional needs.

Frequently Asked Questions

How do I choose the right ACNS model?
Step 1: Measure the nut’s A/F Across Flats size.
Step 2: Check that it falls within the model’s size range.
Step 3: Compare clear width, stud diameter, cutting height, and nose clearance.
Step 4: Select the model that best matches the nut and the space around it.

Why does the size range matter?
Each model is built for a specific working range.
Matching the range helps ensure the tool can fit around the nut and work properly in the available space.

What kind of jobs is a hydraulic nut splitter used for?
It is used for removing nuts that are seized, damaged, or otherwise difficult to loosen by normal means.
It is common in maintenance, repair, and dismantling work.

What should I check besides nut size?
Check the access around the nut as well.
Dimensions such as W, S, H, and N affect whether the tool can enter the space and work comfortably.

How do I know if the tool will fit in a tight area?
Compare the model’s opening and cutting dimensions with the real space around the nut.
If access is limited, choose a model with suitable external dimensions.

What size ranges are available in the ACNS family?
The family includes ranges such as 17.5–30.0 mm, 23.0–36.5 mm, 32.0–51.0 mm, 50.8–65.0 mm, and 65–75.0 mm.

ℹ️ Please note: this specification includes technical diagrams from the Atlas Copco catalog. The complete data and drawings are available in the PDF attached to this page (the “More details – PDF” button).

Atlas Copco ACNS Hydraulic Nuts – Specifications

Ordering No.	Our Model	Weight (Kg)	(Lbs)	Nut Range A/F (MM)	(Inch)
8434205800	ACNS12	4	8.8	17.5 mm – 30.0 mm	(0.69” – 1.18”)
8434205801	ACNS15	4.5	9.9	23.0 mm – 36.5 mm	(0.91” – 1.44”)
8434205802	ACNS20	7	15.4	32.0 mm – 51.0 mm	(1.26” – 2.01”)
8434205803	ACNS36	11	24.2	50.8 mm – 65.0 mm	(2.00” – 2.56”)
8434205811	ACNS50	24.5	54	65 mm – 75.0 mm	(2.56” – 2.94”)

Technical diagram from the Atlas Copco catalog (p. 67)