Medium Duty Mobile Piston Pump, 4.21 cu in/rev, 2-4-Bolt SAE C Mounting Flange, 14T SAE C Splined Shaft, Pressure Compensated Load Sense Control, Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
Medium Duty Mobile Piston Pump, 4.21 cu in/rev, 2-4-Bolt SAE C Mounting Flange, 14T SAE C Splined Shaft, Pressure Compensated Load Sense Control, Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
Designed for mobile hydraulic applications, this Eaton Vickers Medium Duty Mobile Piston Pump delivers a displacement of 4.21 cu in/rev with a rated flow of 32.8 GPM at up to 2500 RPM. The pressure compensated load sense control allows the pump to match output to system demand, making it well suited for mobile equipment where efficiency and responsive flow management are priorities.
The compact, lightweight aluminum housing keeps overall weight low without sacrificing durability, a practical advantage in space-constrained mobile installations. Mounting is via a 2-4-bolt SAE C flange with a 14-tooth SAE C splined shaft. An auxiliary mounting flange is available, and multiple shaft configurations can be specified to suit different drive arrangements.
Part of the Danfoss Power Solutions 70523 Series, this pump is recommended for use with hydraulic fluid maintained at ISO 4406 cleanliness level 18/13 or cleaner. The case must be filled with hydraulic fluid prior to startup and kept full during use, with the case drain line routed directly to the reservoir below fluid level.
SKU: 70553-RAB
Supplier Part Number (MPN): 70553-RAB
Alternate Part Numbers: C1KD62
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Specifications
Application
Mobile
Control
Pressure Compensated Load Sense
Displacement
4.21
Displacement
4.21
Brand
Danfoss – Hydraulics
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Features
Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
70122-RCA
1.16
2500 RPM
9
Pressure Compensated
3/4 Straight Keyed
Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
70122-RCW
1.16
2500 RPM
9
Pressure Compensated
9T SAE A Splined
Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
70523-LAB
4.21
2500 RPM
32.8
Pressure Compensated Load Sense
14T SAE C Splined
CCW Rotation, Side Ports (2 Inch Code 61 Flange Inlet, 1 Inch Code 61 Flange Outlet), SAE-10 Case Drain, 3000 PSI Compensator Setting (Adjustable), 200 PSI Load Sense Bias (Non-adjustable)
70553-RAB
4.21
2500 RPM
32.8
Pressure Compensated Load Sense
14T SAE C Splined
Compact, lighweight durable aluminum|Numerous shaft options|Auxiliary mounting flange available
Product Questions & Answers (2)
Question by: Lance M on Dec 27, 2025, 6:03 PM
pump says it's got a 14T SAE C splined shaft, does that mean it'll bolt right up to a standard SAE C mount on the tractor or skid steer, or is there more to it than that?
Answer by: Customer Support on Dec 29, 2025, 6:28 AM
The shaft and mounting flange are both SAE C spec, so fitment on equipment with a matching SAE C bell housing and splined coupler is straightforward. The flange itself supports either 2-bolt or 4-bolt SAE C configurations, which gives you some flexibility depending on what your machine uses. Just confirm your driven equipment accepts a 14-tooth spline before ordering and you should be in good shape.
Question by: Brett B on Aug 16, 2025, 7:46 PM
What kind of mobile equipment is this pump typically used on?
Answer by: Customer Support on Aug 18, 2025, 8:43 AM
Commonly, this Eaton Vickers 70553 series pump finds its home in mobile applications like construction equipment and agricultural machinery.