S47A  big 4 piston caliper

SAVANINI's S47A caliper is a 4 piston caliper currently developed specifically for medium/medium-large vehiclesIt adopts aluminum alloy forging technology and has high rigidity, high tensile strength, high toughness and high density. Compared with cast aluminum alloy calipers, the rigidity of the SAVANINI’s caliper has increased by about 50%, which effectively reduces the risk of caliper breakage during application. Compared with ordinary external dust covers, the built-in double oil seal design makes the brake feel and reaction speed more sensitive. It has excellent braking performance. After anodizing, vacuum coating CVD color fixation effectively solves common problems such as paint cracking and paint shedding, giving it a metallic texture and brilliant color. After installation, the entire wheel hub looks more attractive, perfectly coping with various road conditions, whether it is daily travel or sightseeing, it can also go on the track.

Applicable wheel hub
17丨18inch
Applicable models/applicable site
B -class middle-sized car/C class Medium and large car/Mountain road/daily travel/intense driving
Piston area/Brake pad friction area
48.04cm²/67.3cm²
Brake caliper size
285*160.2*76.04mm


 




S47AWhat are the unique features of calipers?
One of the large 4 piston calipers developed by SAVANINI specifically for medium/medium-large vehicles, with more and larger pistons,More and larger pistons provide better linear foot feel. After rigorous multiple environmental testing experiments, its performance has been improved compared to original calipers≈20%↑,Paired with performance brake pads, it can meet the intense driving needs of various environments, including mountain running, race tracks, and other special environments, and can handle them with ease.
 





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Technical Parameters


  • Brake caliper technical specifications:
    Weight:3370g/个
    Piston area: 48.04cm² 
    Piston diameter:42mm*2/34mm*2
    Brake disc diameter: φ355mm
    Brake disc thickness:Max 34mm-Min 30mm
    Brake caliper size:D160.2mm*H76.048mm*W285mm
    Wheel hub size:(18inch)
    Oil inlet thread specification:M10*1
    Brake caliper installation center hole distance:180mm
    Installation hole offset distance:40mm
    Mounting hole diameter:12.25mm
    Distance from installation table to top of brake disc:45.72mm
  • Brake disc specifications
    Friction surface width:(φ355mm*32-54.5mm)
    Brake disc air duct:(φ355mm*32 cooling wind arc grooves 7 arc lines  PCD-233mm)
    Heat treatment: temperature 580℃ high temperature 120℃ low temperature repeated heating and cooling 72 hours heat treatment
    Mounting hole diameter: φ8.1mm
    Positioning ring diameter: (355*32φ209mmpetal step: 2.5mm)
    Brake disc surface treatment: iron phosphating brake surface grinding
    Brake disc implementation standard: GG20HC
  • Brake pad specifications
    Brake pad model: S66A
    Brake pad thickness:18mm
    Friction surface width: 50mm
    Friction block area: 67.3cm²/pad*2pad/ (per brake caliper)
    Brake pad formula: Street F500 (standard)/Street and track S650 (optional)/Track R800 (optional)
  • Technical inspection specifications for calipers
    Strength of brake caliper forging shell: tensile strength Qb ≥ 320MPa
    Hardness of shell: hardness HV ≥ 400
    Low-pressure sealing test: brake caliper passes air pressure of 0.4MPa, stabilizes pressure for 5s, and pressure drop is no more than 100Pa
    High-pressure sealing test: brake caliper passes air pressure of 12MPa, stabilizes pressure for 5s, and pressure drop is no more than 0.2MPa
    Appearance: anodized appearance has no bump damage, color and gloss are consistent
    Ultra-high pressure test: sample calipers pass 30MPa oil pressure, no failure and burst
    Testing standard: other performance of brake caliper assembly meets the requirements of QC/T592 {Performance test requirements and bench test methods for passenger car brake caliper assembly}