MHI HASEG Dual Lead Worm Gear Reducer DUHW125B-50
The MHI HASEG Dual Lead Worm Gear Reducer DUHW125B-50 is a precision, backlash-adjustable worm gear set engineered for high-accuracy positioning and smooth torque transmission in demanding automation and motion-control applications. It combines MHI HASEG’s dual-lead worm geometry with robust construction to deliver low transmission error, easy axial backlash adjustment, and long operational stability.
Overview & key benefits
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The MHI HASEG Dual Lead Worm Gear Reducer DUHW125B-50 uses slightly different module/lead on the left and right tooth faces so that axial movement of the worm adjusts backlash without degrading tooth contact — ideal where repeatable angular accuracy and minimal backlash are required.
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Low vibration and precise angle transmission suitable for CNC axes, industrial robots, servo tracking systems, film winding and coating lines, and other precision drives.
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Simple in-place backlash tuning (axial worm movement; ΔSd = 2·V) and standardized mounting help speed installation and maintenance.
Typical technical highlights (DUHW125B-50)
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Nominal center distance (size): E = 125 mm (size 125).
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Nominal reduction ratio: 50 : 1.
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Worm / wheel modules (mA / mB): 3.95 / 4.10 (design uses paired modules).
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Backlash-adjustment coefficient K ≈ 0.0373 (ΔSd = K × V).
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Worm threads Z1 = 1, worm pitch diameter dm1 ≈ 47 mm,
hub/shaft diameters and face widths: b1 = 60 mm (with Vmax = 16 mm allowance),
wheel teeth Z2 = 50, wheel pitch diameter dm2 ≈ 203 mm,
outside diameter dA ≈ 215 mm, face width b2 ≈ 37 mm.
Approximate weight: 84 kilograms
Materials, lubrication & assembly
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Manufactured and inspected to high gear-accuracy standards; recommended case machining tolerances and assembly checks (tooth contact, alignment, arrow marks for correct pairing) are described in the MHI HASEG catalog. Use the specified lubricants and viscosity ranges per the catalog and consult MHI HASEG for special environments.
Ordering & warranty
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Model code indicates size and ratio — DUHW125B-50 = size 125, ratio 50 (confirm any suffix meanings when ordering). For warranty: factory new units carry the manufacturer’s standard warranty (factory shipment 18 months or 12 months from start-up, whichever is shorter).
Applications
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Precision positioning axes, indexing tables, servo gear trains, radar/aiming mechanisms, film winding and coating rolls, cutter drives requiring anti-vibration performance.
Need torque tables, drawings or selection help?
For torque tables, dimensional drawings, detailed rating/performance tables and selection assistance for the MHI HASEG Dual Lead Worm Gear Reducer DUHW125B-50, consult the official MHI HASEG catalog or contact Melink Automation for expert support and quotations.
