436 Wichita Brake

According to both the Rowland Company catalog and Clutch Engineering:
Design & Construction
Low‑inertia, spring‑set air‑release brake, ideal for fail‑safe industrial applications.
Low‑inertia, spring‑set air‑release brake, ideal for fail‑safe industrial applications.
Constructed of high‑strength cast iron, with thick friction discs for enhanced wear life.
Constructed of high‑strength cast iron, with thick friction discs for enhanced wear life.
Fast‑acting air‑tube actuation ensures rapid, smooth stops.
Fast‑acting air‑tube actuation ensures rapid, smooth stops.
Dynamic Torque Ratings
At air pressures of:
60 psi (4.1 bar): 868,800 lb·in (~98,158 N·m)
75 psi (5.2 bar): 1,081,300 lb·in (~122,167 N·m)
90 psi (6.2 bar): 1,303,400 lb·in (~147,260 N·m)
Maximum Bore Size: 10.00 inches (254 mm)
Speed Ratings:
Standard Air‑Tube: Maximum 640 rpm
High‑Speed Air‑Tube (special assembly): Up to 950 rpm (contact factory for details)
Weight & Inertia:
Total Brake Weight: ~4,025 lb (1,826 kg)
Disc & Gear Assembly Weight: ~1,600 lb (697 kg)
Disc & Gear Rotational Inertia: ~1,457 lb·ft² (61.4 kg·m²)
Actuation Type: Pneumatic (air-applied)