Home » Hydraulics Shop » Hydraulic Pumps » Hydraulic Vane Pumps » Single Stage Vane Pumps » Fluidyne V20 WF8201981 Vane Pump | Replacement for Vickers/Eaton V201S11S15A11R 3.7 GPM | 2500 PSI | SAE ‘A’ 2-Bolt | 3/4″ Keyed Shaft

Fluidyne V20 WF8201981 Vane Pump | Replacement for Vickers/Eaton V201S11S15A11R 3.7 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft

Fluidyne V20 WF8201981 Vane Pump | Replacement for Vickers/Eaton V201S11S15A11R 3.7 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft - Image 2

Specifications

Weight	18 lbs
Pump Mounting Flange	2-Bolt Flange (SAE "A" size)
Manufacturer	Fluidyne Fluid Power
Pumps Drive Shaft	3/4" Straight Shaft with Key
Pumps Rotation	Right-Hand (Clockwise)
Pumps Max Pressure	2500 psi
Pumps Rated Speed	1200 RPM
Pumps Max Speed	2800 RPM
Pumps Displacement	36.3 cm³/r (2.22 in³/r)
Pumps Ports In	G1" BSPP Straight Thread
Pumps Ports Out	G1/2" BSPP Straight Thread

Product Selection Guide

These five FluiDyne V20 Series single stage vane pump models differ mainly by flow rate, displacement, shaft configuration, rotation direction, and port orientation. All share the same SAE ‘A’ 2-bolt flange mounting and G1″/G1/2″ BSPP straight thread ports for direct Vickers interchangeability. Selection depends on system flow demands, available drive rotation, and shaft/port configuration requirements. For applications requiring specialized flow control, see our pumps with integral valves. For a full overview of our hydraulic pumps lineup, see our main product family.

?? Important: The specifications shown are for reference and comparison purposes. Always verify specifications with the official manufacturer documentation or contact our technical team at (800) 823-4937 before ordering to ensure compatibility with your application. We cannot accept returns due to specification mismatches.

Model Number	Flow Rate	Max Pressure	Displacement	Mounting
WF8201981 (Current)	11.5 GPM	2500 PSI	36.3 cm³/r (2.22 in³/r)	2-Bolt Flange (SAE “A” size)
WF8201950	13.5 GPM	2500 PSI	42.6 cm³/r (2.60 in³/r)	2-Bolt Flange (SAE “A” size)
WF8201902	6.2 GPM	2500 PSI	19.5 cm³/r (1.19 in³/r)	2-Bolt Flange (SAE “A” size)
WF8201958	8.4 GPM	2500 PSI	26.6 cm³/r (1.62 in³/r)	2-Bolt Flange (SAE “A” size)
WF8201949	8.4 GPM	2500 PSI	26.6 cm³/r (1.62 in³/r)	2-Bolt Flange (SAE “A” size)

Key Differences

Flow Rate & Displacement

Difference: Flow rates range from 6.2 GPM (1.19 in³/rev) to 13.5 GPM (2.60 in³/rev) at 1200 RPM.

Selection Guide: Choose lower displacement models (WF8201902) for precise, low-flow applications; select higher displacement (WF8201950) for systems needing greater output.

Maximum Speed

Difference: WF8201902 supports the highest max speed (3400 RPM); others range from 2400 to 2800 RPM.

Selection Guide: Pick WF8201902 when your drive source operates at higher RPMs or for variable-speed applications. For similar high-displacement applications, see V201P13P62C11L – FluiDyne V20 Pump.

Shaft Configuration

Difference: Options include standard 3/4″ straight keyed shaft, 9-tooth splined shaft, and special shaft code 15.

Selection Guide: Select straight keyed shafts for general use; splined for high-torque; special shaft for OEM or retrofit specifics.

Rotation Direction

Difference: WF8201981 and WF8201950/1958 are right-hand (clockwise); WF8201902 and WF8201949 are left-hand (counter-clockwise).

Selection Guide: Match pump rotation to your drive; left-hand for counterclockwise drives, right-hand for clockwise.

Port Position

Difference: WF8201981, WF8201950, and WF8201902 have ports opposite each other (180°); WF8201958 and WF8201949 have inline ports (0°).

Selection Guide: Choose 180° for standard line routing; 0° for compact installations or when ports need to be on the same side.

Maximum Pressure

Difference: All models are rated 2500 PSI max.

Selection Guide: All models suit medium-pressure (up to 2500 PSI) hydraulic systems.

Quick Selection Guide

If you need: Compact, low-flow/high-speed operation

Choose: WF8201902

Because: 6.2 GPM at 1200 RPM, left-hand rotation, high max speed (3400 RPM), ideal for small presses or machine tool circuits.

If you need: Moderate flow with right-hand rotation

Choose: WF8201958 or WF8201981

Because: 8.4–11.5 GPM at 1200 RPM, right-hand rotation, standard or inline port options.

If you need: Maximum flow from this series

Choose: WF8201950

Because: 13.5 GPM at 1200 RPM, highest displacement (2.60 in³/rev), suitable for larger actuators or faster cycle times.

If you need: Medium flow with left-hand rotation and inline ports

Choose: WF8201949

Because: 8.4 GPM at 1200 RPM, left-hand rotation, inline ports for compact installations.

Compatibility: All models are direct Vickers replacement pumps, 100% interchangeable, and follow SAE J744 ‘A’ mounting with G1″/G1/2″ BSPP ports. Designed for easy drop-in to existing Vickers systems.

For help selecting the best model or to compare with other vane pumps or for cross-referencing Vickers part numbers, call Northern Hydraulics’ hydraulic specialists at (800) 823-4937, Mon-Fri, 7 AM – 5 PM MST. Volume pricing begins at 4 units. All pumps include a 12-month manufacturer warranty and same-day shipping on in-stock items.

Compatibility & Applications

Direct Replacement Information

The WF8201981 from Fluidyne is a direct replacement for Vickers WF8201981 units, offering 36.3 cm³/r (2.22 in³/r) displacement and same SAE J744 mounting. This model provides up to 2500 PSI continuous operation and runs efficiently at a rated speed of 1200 RPM..

Mounting Pattern: SAE ‘A’ 2-bolt
Inlet Port: G1″ BSPP
Outlet Port: G1/2″ BSPP

Common Applications

Commonly used in agricultural equipment applications, construction machinery, and utility vehicles.

agricultural equipment
construction machinery
utility vehicles

Important: Verify pump model WF8201981 matches your existing Vickers unit before ordering. For technical assistance or volume pricing, contact (800) 823-4937.

Purchasing Information

Availability & Delivery

Most hydraulic pumps ship within 1-2 business days. Made-to-order items typically require 5-7 business days.

For current availability on WF8201981, call (800) 823-4937.

Warranty & Protection

12-month warranty covers manufacturing defects
30-day return window for unopened units
Free technical verification before ordering
Each pump pressure tested before shipment

Ordering Options

Order online for immediate processing. Phone orders welcome at (800) 823-4937.

Net 30 terms available for approved accounts.

Volume pricing available on orders of 4 or more units.

Support & Documentation

Installation guide included with every shipment (see our vane pump documentation specifications)
Technical drawings and specifications available
Cross-reference guides for Vickers replacement pumps specifications and common brands
Phone support: Monday-Friday, 7 AM – 5 PM MST

Questions? Call our specialists: (800) 823-4937

SKU: WF8201981

Fluidyne V20 WF8201981 Vane Pump | Replacement for Vickers/Eaton V201S11S15A11R 3.7 GPM | 2500 PSI | SAE ‘A’ 2-Bolt | 3/4″ Keyed Shaft

Name: Fluidyne V20 WF8201981 Vane Pump | Replacement for Vickers/Eaton V201S11S15A11R 3.7 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft
Brand: Northern Hydraulics Inc.
SKU: WF8201981
Price: 299.2 USD
Availability: InStock

$299.20

In stock

No sales tax

Expected delivery Feb 20 - Feb 24

1+ $ 299.20/piece

4+ $ 284.24/piece -5%

8+ $ 269.28/piece -10%

Looking for help or a discount?

Call (800) 823-4937

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