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Series 3-6-12 Steering Control Unit, Non-Load Reaction, 23.80 cu in/rev, 8-16 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 Non-Load Reaction 23.80 cu in/rev 8-16 GPM Flow Range 3/4-16 St.Thd O-Ring Ports is engineered for use in agricultural forestry construction turf care and industrial equipment. This unit offers flow rate variability and varying maximum pressure ratings enhancing its versatility across various applications. With a displacement of 23.8 cu in/rev and a flow range of 8-16 GPM it operates efficiently under standard input torque. The steering control unit features internal involute spline 12 tooth 16/32 Dp 30-degree Pa mechanical interface. Its integral valve design and non-reaction load circuit ensure reliable performance under high-pressure conditions. Recommended for use with most petroleum-based fluids and ATF Type A the unit maintains optimal function with ISO 18/13 cleanliness level filtration. It can withstand a maximum system operating temperature of 200deg;F and a differential of 50deg;F between the steering unit and system temperature. The unit's maximum back pressure rating is 300 PSI and it includes a low torque shaft seal ensuring durability and longevity in demanding environments.

MPN: 211-1177-002

Supplier Part Number: 211-1177-002

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
Special Features
Low Torque Shaft Seal
Valve Options
Manual Steering Check Valve

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Product Questions & Answers (1)

Question by: Lyle C on May 26, 2025, 2:19 PM
Got a loader tractor that needs a new steering unit and the old one's shot. This here is a 23.8 cu in displacement and runs 8 to 16 GPM flow range, that line up alright for a replacement on ag equipment?
Answer by: Customer Support on May 28, 2025, 8:16 AM
Agricultural equipment is one of the primary applications this unit was built for, so that checks out. The 23.8 cu in/rev displacement and 8-16 GPM flow range are fixed specs on this unit, so as long as your system flow and the original unit's displacement match those numbers, you're in good shape on that front. Port size is 3/4-16 straight thread O-ring, and the mechanical interface is an internal involute spline, 12 tooth, 16/32 DP, 30 degree pressure angle. Cross those against what's coming off the machine before ordering and you'll know right away if it drops in clean.

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