Blackmer A.1 Inline Helical Gear Speed Reducer 3.3:1 AGMA 19.4

HAS A 1″ AND 1-3/8″ DIAMETER SHAFT.

🔧 Product Overview

• Model Range: The A‑series is part of Blackmer’s helical reducers—robust units rated to ANSI/AGMA 6010 standards, typically used with motors (950–1,750 RPM) up to 30 HP

• Construction: Hard‑heat‑treated helical gears, oil‑immersed for smooth, quiet operation. Shafts are supported by dual ball bearings for strength and durability Mounting Styles:

  • HRO(F): fixed bracket-mounted

  • HRA/HRB: adjustable bracket-mounted for motor alignment flexibility

📌 Ratio & AGMA Rating

• 3.3:1 reduction — falls within the HROF and HRA ratio offerings (e.g., HROF = 3.32:1, HRA = 3.40:1)

• AGMA 19.4 likely refers to the AGMA quality class for gear accuracy (higher number = tighter tolerances). The A‑series gears meet ANSI/AGMA 6010 standards