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Series 3-6-12 Steering Control Unit, Non-Load Reaction, 17.90 cu in/rev, 4-8 GPM Flow Range, 3/4-16 St.Thd O-Ring Ports, Can be used in a variety of applications|Flow rate variability|Varying maximum pressure ratings

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Description & Features

The Series 3-6-12 Steering Control Unit offers excellent non-load reaction steering suitable for various applications including agricultural forestry construction turf care and industrial equipment. With a displacement of 17.90 cu in/rev and a flow range of 4-8 GPM it ensures consistent and reliable performance.

Designed by Danfoss Power Solutions II LLC (Char-Lynn) this unit features 3/4-16 St.Thd O-Ring ports and an internal involute spline mechanical interface with 12 teeth meeting diverse installation needs. The maximum back pressure is 300 PSI complemented by a recommended filtration level of ISO 18/13 cleanliness enhancing product longevity.

Integral valves and the capability to manage varying maximum pressure ratings ensure seamless and adaptable functionality. The product's robust design allows for a maximum system operating temperature of 200deg; F with a differential limit of 50deg; F between the steering unit and system temperature.

Ideal for environments requiring durable steering solutions the Series 3-6-12 unit is compatible with most petroleum-based fluids and ATF Type A maintaining optimal operation within diverse fluid systems.

MPN: 211-1158-002

Supplier Part Number: 211-1158

Specifications

Brand
Char-Lynn®
Color
Black
Connection Type
UNF-2B, SAE O-ring
Design Code
2
grp Input Torque
25 to 35 lb-in at 100 psi Back Pressure For Powered Applications, 100 lb-ft Maximum For Non-Powered Applications
grp Recommended Filtration
ISO 18/13 Cleanliness Level
grp Recommended Fluids
Most Petroleum Based Fluids and ATF Type A
Identification
Eaton Product Number On Nameplate
Inlet Load Sense Valve Setting
0 B
Input Torque
Standard
Integral Valves
With Integral Valves
Load Circuit
Non-Load Reaction
Material
Ductile Iron
Mechanical Interface
Internal Involute Spline, 12-Tooth 16/32 DP 30 deg PA
Mounting Threads
2x 3/8-24 UNF-2B Port Face, 4x 3/8-16 UNC-2B Mounting Face
Ports
3/4-16 Straight Thread O-ring
Recommended Filtration Level
ISO 18/13 Cleanliness
Return Pressure Rating
10
Series
3/6/12 Series
Valve Options
Manual Steering Check Valve

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Product Questions & Answers (3)

Question by: Keith W on May 2, 2025, 6:14 PM
i got a machine that steers kinda touchy, is this one the non reaction style where the wheel dont kick back on you?
Answer by: Customer Support on May 4, 2025, 6:14 AM
Non-load reaction means steering feedback from the wheels is not sent back through the steering wheel the same way a load reaction unit would. This Series 3-6-12 unit is a non reaction load circuit, so it is aimed at steering setups where you want that reduced kickback feel.
Question by: Floyd F on Aug 8, 2025, 5:27 PM
What kind of equipment is this steering unit actually built for? Got a older forestry machine and trying to figure out if it'd even be worth looking into.
Answer by: Customer Support on Aug 9, 2025, 9:32 PM
Agricultural, forestry, construction, turf care, and industrial equipment are all listed applications for this unit, so a forestry machine fits right in that range. It runs a 17.90 cu in/rev displacement with a flow range of 4 to 8 GPM, which covers a solid spread of working equipment. The non-load reaction design means steering input from the wheels won't feed back through the wheel to the operator, which tends to be a practical choice on rougher terrain where you don't want the machine fighting your hands.
Question by: Warren B on Dec 15, 2025, 6:14 PM
Reckon this steering unit would work on my old tractor? It's been needing a replacement for ages.
Answer by: Customer Support on Dec 16, 2025, 6:45 PM
This Series 3-6-12 unit is suitable for agricultural equipment, forestry equipment, construction equipment, turf care equipment, and industrial equipment, making it a versatile option for various applications.

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