Technical Reference Data
Export-Verified Critical Spare Parts
Representative technical metrics from our core production series covering pneumatic valves, braking assemblies, wheel hubs, and driveline carriers.
Pneumatic Control
EBS Axle Modulator Valve
Operating pressure up to 10.0 bar. Port 23: M16x1.5 Voss; Ports 11, 12, 13, 21, 22: M22x1.5 Voss connection standard.
Reference: KNB-MAY-0074
Interchange: WABCO 480 103 0120
Brake Hardware
Ventilated Brake Disc Ø430mm
Heavy-duty ventilated casting: 45 mm thickness, 132 mm height, 10-hole configuration, M14x1.5 mounting holes for Mercedes Actros/Axor.
Reference: KNB-EGF-1760
Interchange: OEM 942 421 12 12
Air Suspension
Rolling Lobe Air Spring
Maximum diameter Ø207 mm, connection Ø130.8 mm (top and base), overall installation height 394 mm with reinforced rubber bellows.
Reference: KNB-AKT-0001
Interchange: ContiTech 644 N / BPW
Wheel-End Hub
Front Axle Wheel Hub Assembly
Precision-machined hub assembly: inner bore Ø125 mm, outer diameter Ø383 mm, overall height 165.5 mm for Volvo FH and FM series.
Reference: KNB-EGF-0233
Interchange: Volvo 20535202 / 21024206
Transmission
Clutch Servo Power Unit
Pneumatic/hydraulic hybrid assistance rated up to 10.0 bar operating pressure, stroke length 85 mm. Cast alloy body with corrosion coat.
Reference: KNB-MAY-0598
Interchange: WABCO 970 051 111 0
Steering & Axle
ZF-Type King Pin Repair Kit
Case-hardened and precision-ground king pin set with needle bearings and shims. Hardness rating 58-62 HRC for extended axle longevity.
Reference: KNB-MRK-0977
Interchange: ZF 4474 298 455
Air Preparation
Air Processing Unit (APU)
Regulated cut-off pressure 12.3 bar. Integrated multi-circuit protection valve, oil separator, and electronic regeneration heater.
Reference: KNB-MAY-2427
Interchange: Knorr ZB 4511 / A0014317915
Trailer Electrical
ADR-Certified Rear LED Lighting Set
Multi-voltage 12/24V trailer rear combination light with integrated reverse warning, dynamic turn signals, and ADR chemical haulage certification.
Reference: KNB-SER-0001
Standard: ECE R10 / ECE R48 / ADR