| Product model | Host drawing number | Size | Technical parameters |
| Spring brake air chamber | SX250KZ-3530002 | Connecting bolts: 2-M16×1.5-6g Bolt center distance: 120.7mm Connecting rod fork opening gear: 16.5 connecting rod fork pin Φ16 | Parking distance: 67mm Driving stroke: 57mm Relieve parking pressure: 0.51±0.3MPa Maximum working pressure: 1MPa Working temperature: -40C°~+80C° |