Niehoff Alternator 24V 260A Brushless External Regulator Part No. NXA9301

The Niehoff Alternator 24V 260A is a new alternator supplied under Part No. NXA9301, with a 24-volt output and 260 amp power rating. It is listed as a brushless unit with an external regulator and includes replacement regulator RGX3030. The alternator uses a twin leg mount and is identified for Niehoff applications.

Mounting and physical dimensions matter on heavy-duty charging systems, and this unit is specified with 101mm inside mounting legs, 233mm mount centre to centre, a 13mm pivot hole diameter, and a 1/2 UNC adjusting hole diameter. The shaft diameter is 22mm, and the unit weighs 37kg, so it is intended for substantial industrial-duty installations rather than light vehicle use.

The stated product use is for various industrial applications. Fitment information supplied for this part includes equipment from Atlas Copco, Bucyrus, Caterpillar, Komatsu, Le Tourneau and Liebherr, but the exact application still needs to be checked against the part number, mounting pattern, regulator arrangement, and shaft dimensions before ordering.

A one-year warranty is listed for this alternator. Because charging system parts can look similar while differing in mount type, regulator type, and physical dimensions, the safest approach is to compare NXA9301, the 24V 260A rating, and the listed mounting measurements with the unit being replaced.

Key Features

• 24V alternator with 260A output
• New unit, not remanufactured
• Brushless design
• External regulator type
• Replacement regulator RGX3030 included
• Twin leg alternator mount

Specifications

• Brand: Niehoff
• Part No.: NXA9301
• Type: Alternator
• Voltage: 24V
• Power rating: 260A
• New / Reman.: New
• Warranty: One Year
• Regulator type: External

Verified fitment references provided

• Atlas Copco PV235
• Atlas Copco PV271
• Bucyrus SKSW
• Caterpillar MD6250
• Caterpillar MD6420
• Komatsu 730-E8
• Komatsu 730E
• Komatsu 830E

Application and Buying Notes

Before buying, confirm the old alternator matches Part No. NXA9301 or the same Niehoff application reference. The key physical checks here are the twin leg mount, 101mm inside mounting legs, 233mm mount centre to centre, 13mm pivot hole diameter, 1/2 UNC adjusting hole diameter, and 22mm shaft diameter. Even where the equipment family is listed, those measurements still need to line up.

The 24V, 260A specification is important for industrial electrical systems that require the correct charging output. A mismatch in voltage, amperage, regulator type, or mounting arrangement can stop the alternator fitting or functioning correctly. This unit is specified as brushless and uses an external regulator, with RGX3030 included, so those details should be matched to the machine already in service.

The fitment references supplied cover a range of heavy equipment and mining applications, including Atlas Copco, Bucyrus, Caterpillar, Komatsu, Le Tourneau and Liebherr models. Use those references as a guide only and confirm the exact model, year where relevant, and the installed alternator details before ordering. The weight of 37kg also indicates a large unit, so handling and installation planning should be considered.

If you are replacing a failed alternator, compare the label, connector arrangement, mount style, and shaft size on the removed unit before committing to purchase. For industrial machines, the correct part number and mounting measurements are usually the quickest way to avoid downtime caused by an incorrect replacement.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number NXA9301 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty One Year, Inside Mounting Legs 101mm, Power Rating (Amp) 260, Shaft Diameter 22mm, Voltage 24, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. NXA9301, Brand NIEHOFF, Description Niehoff Alternator 24V 260A, Adjusting Hole Diameter 1/2 UNC, Pivot Hole Diameter 13, Regulator Type External, Suits Unit Make Niehoff, Note Brushless, Replacement Reg No. RGX3030 (included), Mount Cnt to Cnt 233mm.

Niehoff Alternator 24V 260A. Part number NXA9301 should be checked first. Listed voltage is 24. Listed output rating is 260. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is External. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number NXA9301, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 24 and output 260 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include ATLAS COPCO PV235, ATLAS COPCO PV235 2013, ATLAS COPCO PV235 2014, ATLAS COPCO PV235 2015, BUCYRUS SKSW, BUCYRUS SKSW 2011. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment by matching Part No. NXA9301, the 24V 260A rating, twin leg mount, and the listed mounting measurements against the alternator removed from the machine before ordering.

FAQ

Is this alternator new or remanufactured?

This Niehoff alternator is listed as new, not remanufactured.

What voltage and output does it have?

It is specified as 24V with a 260 amp power rating.

Does it use an external regulator?

Yes. The regulator type is listed as external, and replacement regulator RGX3030 is included.

What mounting details are listed?

The alternator has a twin leg mount, 101mm inside mounting legs, 233mm mount centre to centre, a 13mm pivot hole diameter, and a 1/2 UNC adjusting hole diameter.

Which equipment families are referenced for fitment?

The supplied fitment references include Atlas Copco, Bucyrus, Caterpillar, Komatsu, Le Tourneau and Liebherr applications.

What should I check before ordering?

Match Part No. NXA9301, the 24V 260A specification, the twin leg mount, shaft diameter of 22mm, and the listed mounting measurements against the existing unit.