Products for Trucks
TAS Series Power Steering Gears
Superior Torque and Performance
This product is engineered for superior torque output and performance for both on and off-highway vehicles with medium and heavy front axle loads. The TAS gear operates with fewer moving parts and maintains responsive handling and positive steering control.
Advantages
- Improved rotary valve design
- Automatic poppets
- Increased pressure torque ratings
- Optional automatic bleed systems
Technical Information
Specifications
| TAS37 | TAS40 | TAS55 | TAS65 | TAS66 | TAS85 | |
|---|---|---|---|---|---|---|
| Front Axle Weight |
8,000 lbs 3,500 kg |
9,000 lbs 4,000 kg |
12,000 lbs 5,500 kg |
14,300 lbs 6,500 kg |
14,600 lbs 6,600 kg |
18,000 lbs 8,200 kg |
| Pressure Rating |
1,958 psi 135 bar |
2,175 psi 150 bar |
2,175 psi 150 bar |
2,175 psi 150 bar |
2,364 psi 163 bar |
2,175 psi 150 bar |
| Output Torque at Rated Pressure 90% Efficiency |
25,925 in/lbs 2,930 N-m |
28,450 in/lbs 3,214 N-m |
35,300 in/lbs 3,988 N-m |
43,050 in/lbs 4,864 N-m |
46,737 in/lbs 5,280 N-m |
58,850 in/lbs 6,649 N-m |
| Gear Travel | 100° | 95° | 95° | 95° | 95° | 95° |
| Gear Ratio(s) | 17.8:1 | 20.4:1, 18.4:1 | 20.4:1, 18.4:2 | 20.4:1, 18.4:3 | 20.4:1, 18.4:4 | 23.1:1, 21:1 |
| Output Shaft Diameter |
1.75 in 44.5 mm |
1.75 in 44.5 mm |
2.00 in 50.8 mm |
2.00 in 50.8 mm |
2.00 in 50.8 mm |
2.25 in 57.15 mm |
| Output Shaft Serrations | 1.75 x 46 Straight | 1.75 x 46 Straight | 1.937 x 52 Straight | 1.937 x 52 Straight | 1.937 x 52 Straight | 2.25 x 59 Straight |
| Input Shaft Serrations | 0.812 x 36 Straight | 0.812 x 36 Straight | 0.812 x 36 Straight | 0.812 x 36 Straight | 0.812 x 36 Straight | 0.812 x 36 Straight |
| Maximum Temperature |
250°F 121°C |
250°F 121°C |
250°F 121°C |
250°F 121°C |
250°F 121°C |
250°F 121°C |
| Minimum Pump Flow for 1.5 hwt/sec |
2.5 gpm 9.5 lpm |
2.2 gpm 8.3 lpm |
2.7 gpm 10.2 lpm |
3.0 gpm 11.3 lpm |
3.0 gpm 11.3 lpm |
3.6 gpm 13.6 lpm |
| Recommended Pump Flow Control Range |
3.6-5.0 gpm 13.6-18.9 lpm |
3.6-5.0 gpm 13.6-18.9 lpm |
3.6-5.0 gpm 13.6-18.9 lpm |
3.6-5.0 gpm 13.6-18.9 lpm |
3.6-5.0 gpm 13.6-18.9 lpm |
4.2-8.0 gpm 16-30 lpm |
| Approximate Dry Weight |
55.4 lbs 25.1 kg |
60 lbs 27 kg |
73 lbs 33 kg |
78 lbs 35 kg |
79 lbs 35 kg |
98 lbs 44 kg |
