Series 40 hydraulic steering units
Our series 40 steering control units provide high flow rates and design flexibility for demanding steering applications. They help powerful vehicles get big tasks done smoothly and efficiently with flow rates between 151 l/min and 227 l/min [40 US gal/min and 60 US gal/min] at pressures up to 240 bar [3,500 psi].
Features and benefits
- Balanced architecture and thick sleeve design provides reliability and smooth performance, even under transient pressure and thermal conditions
- Symmetrical valving increases balance for precise servo response and uniform steering action, while progressive valving reduces operating costs
- Seal and centering spring designs provide positive, low-effort steering for excellent vehicle control
- Optional Q-Amp flow amplification maximizes steering control
- Optional pilot-pressure port can be used for diagnostics or increased priority-valve flow
- High-grade ductile-iron housing provides increased strength for demanding applications
- High-capacity gerotor provides responsive, reliable steering in a compact, affordable package
Applications
- Loaders
- Dump trucks
- Mining equipment
- Transporters
Drawings and specifications
Ambient temperature | -30°C to 60°C [-22°F to 140°F] |
| Permissible oil temperature | -30°C to 93°C [-22°F to 200°F] |
| Recommended oil | Pestroleum-based fluids |
| Maximum contamination (ISO 4406) | ON/OR 18/13 LS/CN/PB 18/13 |
| Maximum temperature difference from other hydraulics | Δ28°C [Δ50°F] |
| Normal steering torque | 2.8 Nm to 3.4 Nm [25 lb-in to 30 lb-in] |
| Manual steering | not possible |
