Acrow BT50-SCA25.4-090A – Side Cutter Arbor (Ø25.4 mm Bore, 90 mm Length, Extended Key Design)

The Acrow BT50-SCA25.4-090A is a heavy-duty side cutter arbor designed for mounting 1" (Ø25.4 mm) side milling cutters, slitting saws, and staggered tooth cutters. The strengthened “A-spec” extended key design improves torque transmission and cutter stability during high-load applications. With a BT50 taper, this arbor delivers exceptional rigidity and cutting performance, making it ideal for deep slotting, heavy side milling, and roughing operations. Precision-ground surfaces ensure perfect cutter seating and excellent run-out control.

Specifications:

• Brand: Acrow
• Type: Side Cutter Arbor
• Model: BT50-SCA25.4-090A
• Bore Size: Ø25.4 mm (1")
• ØD (Shank Diameter): 25.4 mm
• ØD1 (Flange Diameter): 40 mm
• L (Overall Length): 90 mm
• L1: 75 mm
• L2: 25 mm
• L3: 21 mm
• L4: 32 mm
• G (Drawbar Thread): M24 × P2.00
• W (Key Width): 6.35 mm
• Key Size: 6.35 × 6.35 × 70L (Extended Key – “A” Type)
• Material: Hardened Alloy Steel
• Surface Finish: Precision Ground
• Run-out Accuracy: ≤ 0.005 mm
• Application: Designed for high-rigidity side milling, deep slot cutting, and slitting operations using 1" bore cutters on BT50 CNC machining centers; the “A-type” extended key offers superior torque resistance.