Falk 253207 Grid Hub Coupling, 3-3/4" Bore 90T/1090T

Steelflex® grid hub for Falk 90T/1090T coupling assemblies, machined to a 3‑3/4 in straight bore. Steel construction with precision grid slots for shock absorption and misalignment capability in heavy‑duty rotating equipment. Country of manufacture: USA Technical Specifications Manufacturer: Falk (Regal Rexnord) Model/Catalog No.: 253207 Coupling Family: Steelflex® Grid, Type T (90T/1090T size) Compatible Coupling Sizes: 90T / 1090T Bore Diameter: 3‑3/4 in (finished straight bore) Material: Steel hub (Steelflex grid hub) Hub Barrel OD (size 1090T reference): 4.88 in (approx., per 1090T hub spec) Length Through Bore (size 1090T reference): 3.88 in (approx., per 1090T hub spec) Approximate Unit Weight: 8.38 lb (Regal Rexnord part page 0253207) Torque Capacity (size reference, coupling system 1090T): up to ~33,000 in‑lb when used as the complete 1090T Steelflex coupling (catalog rating; actual system rating depends on full assembly selection) Design Features: Grid‑type spring action for vibration damping and shock load reduction; angular/parallel misalignment capability when used with matching grid and cover set (per Steelflex catalog) Typical Hub Style: T‑Hub (straight bore; reborable/finished variants exist for 1090T size) Interchange/Notes: Use only with 90T/1090T compatible mate hub, grid, and cover kit; verify barrel OD and LTB against your existing coupling half before installation Country of Manufacture: USA