Skip to the beginning of the images gallery

420 Mobile Piston Pump, 3.80 cu in/rev, 2-Bolt SAE BB Mounting Flange, 15T Splined Shaft, Pressure Compensated Load Sense

Description & Features

Designed for demanding mobile hydraulic applications, the 420 Mobile Piston Pump, 3.80 cu in/rev, 2-Bolt SAE BB Mounting Flange, 15T Splined Shaft, Pressure Compensated Load Sense is an open-circuit axial piston pump built to handle high-cycle workloads across a broad range of equipment types. Typical platforms include loader backhoes, agriculture tractors, crawler dozers, mini excavators, concrete and asphalt pavers, and container handling machinery.

Rated at 4,060 psi maximum operating pressure with a flow rate of 29.6 GPM, this pump mounts via a 2-bolt SAE BB flange and accepts a 15-tooth splined shaft input. The pressure compensated load sense control helps match pump output to system demand, supporting efficient power use across variable load conditions.

Key construction features include a saddle-type swashplate with steel-backed polymer bearings, pressure lubrication to reduce wear, and a bimetal timing plate that improves pump filling characteristics and reduces fluid-borne noise. A single control piston limits forces acting on the swashplate while keeping the overall package compact. Recommended fluid cleanliness is ISO 4406 level 21/18/13 or cleaner.

SKU: 421AK01292B

Supplier Part Number (MPN): 421AK01292B

Alternate Part Numbers: C1KK35

Specifications

Brand Danfoss	Control Type Pressure/Flow Compensator with Load Sensing	Design Code Second	Dimensions 12.39 in L x 5.75 in W x 8.75 in H	Drive Shaft Type Splined	grp Caution Highly Efficient Pump Controls, Strong, Field-Proven Rotating Group, Saddle-type Swashplate with Steel-backed Polymer Bearings and A Pressure Lubrication Passage to Reduce Wear, Stiff Swashplate Reduces Deflection, Allows For Evenly Loaded Bearings and Ex	Grp Fluid Viscosity 80 to 188 SSU Recommended Operating Range, 1192 SSU Maximum Continuous, 9720 SSU Maximum at Startup	grp Recommended Filtration ISO 4406 Cleanliness Level 21/18/13 or Cleaner	grp Speed Ratings 2.5 cu-in/rev and 3 cu-in/rev Models: 2650 rpm at 0 psig, 2450 rpm at 5 inHg, 2950 rpm at 15 psig, 3600 rpm Maximum Standby, 3.8 cu-in/rev Models: 2600 rpm at 0 psig, 2400 rpm at 5 inHg, 2800 rpm at 15 psig, 3600 rpm Maximum Standby, 4.88 cu-in/rev Models	Housing Color Blue	Housing Finish Primer	Housing Material Iron	Identification Mark Eaton Product Number and Full Model Code On Label	Inlet Type Code 61 Flange	Mounting Type SAE B 2-Bolt Flange	Outlet Type Code 61 Flange	Rotation Direction Clockwise	Series 420 Series	Shaft IO 15T Splined

Similar Products

Model Number	Part Number	Displacement	Pressure Rating	Control	Shaft	Features
ADU041R05AA10A28140000200100CD0B 420 Mobile Piston Pump	421AK00694B	2.5	4060	Pressure Compensated Load Sense	13T SAE B Splined	Fastest response and recovery times in the market\|Increase efficiency with advanced control options\|High pressure and flow capacity
ADU062R32AB10A35170000100500CD0B 420 Mobile Piston Pump	421AK01677B	3.8	4060	Pressure Compensated Load Sense	14T SAE C Splined	Fastest response and recovery times in the market\|Increase efficiency with advanced control options\|High pressure and flow capacity
ADU062R08AB10A32360000100100CD0B 420 Mobile Piston Pump	421AK01670B	3.8	4060	Pressure Compensated Load Sense	15T Splined	Fastest response and recovery times in the market\|Increase efficiency with advanced control options\|High pressure and flow capacity

Product Questions & Answers (4)

Question by: Lee Y on May 7, 2025, 6:00 AM

What kind of machines does this pump work on? I got a backhoe that needs fixin'.

Answer by: Customer Support on May 9, 2025, 6:58 AM

Designed for mobile equipment, this piston pump is used in machinery like loader backhoes, agriculture tractors, and mining equipment.

Question by: Ricky J on Aug 21, 2025, 5:04 PM

pump's rated at 4060 psi max, that hold up running load sense controls on something like a crawler dozer or articulated hauler all day, or is that more of a peak figure?

Answer by: Customer Support on Aug 22, 2025, 5:24 PM

At 4,060 psi, that's the maximum operating pressure, and the pressure compensated load sense control on this pump is built for exactly the kind of variable-demand work you'd see on crawlers and articulated haulers. The load sense setup means the pump only puts out what the system asks for, which keeps heat and wear in check during long shifts. Just make sure your fluid stays in that 80 to 188 SSU recommended viscosity range and your filtration is at ISO 4406 cleanliness level 21/18/13 or better, and you're set up for serious continuous use.

Question by: Randy H on Dec 19, 2025, 9:19 AM

What kind of machines can I use this pump on? I've got an old dump truck needs a new one.

Answer by: Customer Support on Dec 20, 2025, 7:31 PM

You'll find this 420 series pump used on dump truck lifts, as well as loader backhoes, mining machinery, farm tractors, and even railroad equipment. It's a pretty versatile piece of equipment.

Question by: Lance T on May 3, 2025, 9:19 AM

got a pump here with a 2-bolt SAE BB mount and a 15 tooth splined shaft, is that what this one comes with?

Answer by: Customer Support on May 4, 2025, 2:42 PM

It is set up with a 2-bolt SAE BB mounting flange and a 15T splined shaft.

420 Mobile Piston Pump, 3.80 cu in/rev, 2-Bolt SAE BB Mounting Flange, 15T Splined Shaft, Pressure Compensated Load Sense

Description & Features

Specifications

Related Documents

Similar Products

Product Questions & Answers (4)