Rigid Front Suspension (RFS)
- BRIST offers two main sub-categories of rigid front suspension (RFS), which are “conventional” and “deep drop” types
- Key difference between these 2 sub-categories is that the deep drop types provide flat floor passage in front, whereas conventional types do not serve for low floor applications
- Considering significantly low warranty claims recorded over the last 10 years, BRIST rigid front suspension has proved its success in field with the performance in vehicles of reputable customers (e.g. Isuzu, BMC and many more)
Rigid Front Suspension– Conventional Types
- BRIST offers different versions of rigid front suspensions varying from 4.1t to 6.0t axle loading, which are widely used for midi-buses and light / medium trucks
- BRIST RFS differentiates among competitor products, because its offers an optimized axle weight, customized drop center and compact wheel-ends with unitized hub bearing
| Type | Axle Load Max (kgf) | Vehicle Width (mm) | Distance Between Leaf Spring Pads (mm) | Wheel Steering Angle Max | Axle Weight* (kg) | Wheel Size (mm) | |
|---|---|---|---|---|---|---|---|
 | RFS 41-175 (Truck) | 4,100 | 2,050/2,100 | 790 | 50° | 212 | 17.5″x6″ Bolt Circle 222 |
| RFS 41-175 (Bus) | 4,100 | 2,250/2,300 | 880 | 50° | 219 | 17.5″x6.75″ Bolt Circle 222 |
| RFS 45-175 (Bus) | 4,500 | 2,250/2,300 | 880 | 50° | 227 | 17.5″x6.75″ Bolt Circle 245 |
 | RFS 55-195 | 5,500 | 2,300/2,400 | 790 | 55° | 297 | 19.5″x7.5″ Bolt Circle 275 |
| RFS 60-175 | 6,000 | 2,400 | 792 | 45° | 244 | 17.5″x6.75″ Bolt Circle 275 |
| RFS 60-195 | 6,000 | 2,400 | 792 | 45° | 303 | 19.5″x6.75″ Bolt Circle 275 |
| RFS 41-175 (Truck) | |
|---|---|
| Axle Load Max | 4,100 kgf |
| Vehicle Width | 2,050/2,100 mm |
| Distance Between Leaf Spring Pads | 880 mm |
| Wheel Steering Angle Max | 50° |
| Axle Weight | 212 kg |
| Wheel Size | 17.5″x6″ Bolt Circle 222 mm |
| RFS 41-175 (Bus) | |
|---|---|
| Axle Load Max | 4,100 kgf |
| Vehicle Width | 2,250/2,300 mm |
| Distance Between Leaf Spring Pads | 790 mm |
| Wheel Steering Angle Max | 50° |
| Axle Weight | 219 kg |
| Wheel Size | 17.5″x6.75″ Bolt Circle 222 mm |
| RFS 45-175 (Bus) | |
|---|---|
| Axle Load Max | 4,500 kgf |
| Vehicle Width | 2,250/2,300 mm |
| Distance Between Leaf Spring Pads | 880 mm |
| Wheel Steering Angle Max | 50° |
| Axle Weight | 227 kg |
| Wheel Size | 17.5″x6.75″ Bolt Circle 245 |
| RFS 55-195 | |
|---|---|
| Axle Load Max | 5,500 kgf |
| Vehicle Width | 2,300/2,400 mm |
| Distance Between Leaf Spring Pads | 790 mm |
| Wheel Steering Angle Max | 55° |
| Axle Weight | 297 kg |
| Wheel Size | 19.5″x7.5″ Bolt Circle 275 mm |
| RFS 60-175 (Bus) | |
|---|---|
| Axle Load Max | 6,000 kgf |
| Vehicle Width | 2,400 mm |
| Distance Between Leaf Spring Pads | 792 mm |
| Wheel Steering Angle Max | 45° |
| Axle Weight | 244 kg |
| Wheel Size | 17.5″x6.75″ Bolt Circle 275 |
| RFS 60-195 (Bus) | |
|---|---|
| Axle Load Max | 6,000 kgf |
| Vehicle Width | 2,400 mm |
| Distance Between Leaf Spring Pads | 792 mm |
| Wheel Steering Angle Max | 45° |
| Axle Weight | 303 kg |
| Wheel Size | 19.5″x6.75″ Bolt Circle 275 |
Rigid Front Suspension– Deep Drop Types (RDD)
- BRIST offers different versions of rigid deep drop varying from 4.2t to 5.5t axle loading, which are widely used are city-bus like applications, ready to fit to chassis.
- Compromising the gap between engine sump and axle beam, and certain level of ground clearance; deep drop versions have been engineered to fit into the tight spaces, avoiding any collision of engine at its lowered position for flat floor passage in front.
- BRIST deep drops have proven its performance in most difficult climate and terrain conditions such as Uzbekistan, Tajikistan and Turkey.
| Type | Axle Load Max (kgf) | Vehicle Width (mm) | Drop Value (mm) | Distance Between Leaf Spring Pads (mm) | Wheel Steering Angle Max | Axle Weight* (kg) | Wheel Size (mm) | |
|---|---|---|---|---|---|---|---|---|
 | RDD 42-175 | 4,200 | 2,350/2,400 | 167 | 1,100 | 53° | 255 | 17.5″x6″ Bolt Circle 245 |
 | RDD 45-175 | 4,500 | 2,400/2,450 | 114 | N/A | 51° | 268 | 17.5″x6″ Bolt Circle 205 |
| RDD 58-195 | 5,800 | 2,400/2,450 | 145 | 1,362 | 52° | 320 | 19.5″x7.5″ Bolt Circle 275 |
*excluding loose items being out of basic scope of supply, which can vary upon customer specifications
| RDD 42-175 | |
|---|---|
| Axle Load Max | 4,200 kgf |
| Vehicle Width | 2,350/2,400 mm |
| Drop Value | 167 mm |
| Distance Between Leaf Spring Pads | 1,100 mm |
| Wheel Steering Angle Max | 53° |
| Axle Weight | 255 kg |
| Wheel Size | 17.5″x6″ Bolt Circle 245 mm |
| RDD 45-175 | |
|---|---|
| Axle Load Max | 4,500 kgf |
| Vehicle Width | 2,400/2,450 mm |
| Drop Value | 114 mm |
| Distance Between Leaf Spring Pads | N/A |
| Wheel Steering Angle Max | 51° |
| Axle Weight | 268 kg |
| Wheel Size | 17.5″x6″ Bolt Circle 205 mm |