Custom & Special Gearboxes
Non-catalogue configurations built every week — double output, hollow input and output, double reduction, self-lock, speed increasers, and orientation specials.
Specials Capability
If the Catalogue Box Does Not Fit, We Machine One That Does
Most Anand Gears specials start from a real mounting problem: a second shaft, a hollow bore, a non-standard orientation, or a ratio the single-stage worm cannot reach. Our shop builds these as standing custom configurations — not one-off experiments — across NU, Adaptable, ALM/NMRV aluminium, KL bevel, and fabricated helical-bevel families.
Configuration Menu
Special Configurations We Build Regularly
Double output
Output shaft extended both sides of the worm wheel — used on mixers, dual conveyors, and twin-drive mechanisms. Standing configs on mid CD sizes (e.g. 72 / 84 / 100CD class).
Hollow both ends
Hollow input and hollow output on NU and special bodies for through-shaft and compact motor stacks.
Double reduction
Two-stage reduction for very high ratios and improved efficiency versus an extreme single worm ratio — including motorised vertical packages.
Self-lock specials
High-ratio NU / Adaptable units specified for self-locking hold on lifts, fences, and batch equipment.
Speed increasers
Step-up gearboxes (ratio inverted) for applications that need higher output speed than the input — including manually driven variants.
Orientation specials
Under Driven, Over Driven, Top-Bottom, and LH→Over Driven conversions performed to house nomenclature.
Manufacturing
What the Shop Can Machine
Specials are machined in-house on CNC milling machines for housings and covers, CNC lathes for shafts, cylindrical grinding for journals, and hobbing / thread-milling machines for worm wheels and worm shafts. That stack is why custom shaft ends, non-standard bores, and orientation flips are routine rather than exceptional.
Related: Replacement & Repair · Worm Gearboxes · Gallery · About / Manufacturing
FAQ
Custom & Special Gearboxes — Common Questions
What does double reduction up to 1000:1 mean in practice?
A second reduction stage after the worm (or a worm–helical stack) multiplies ratio so very slow outputs are possible without an impractically large single worm. Exact maximum ratio depends on the stages selected for the duty.
Can you convert Under Driven to Over Driven?
Yes. Orientation conversions (including fitting LH and making Over Driven RH) are a documented special practice — confirm lubrication and nameplate orientation on the order.
Do you build speed increasers?
Yes. Step-up / speed-increaser gearboxes are available, including manually driven solid-shaft variants for process equipment.
Budgetary offer — Custom & Special Gearboxes
Tell us the duty and we’ll send you a number
Power, input speed, and either the ratio or the output speed you need are usually enough to start. Our engineers reply on the same working day.
Have a nameplate photo, a drawing, or the old unit in front of you? Send it on WhatsApp — that is the fastest route to a number.
Prefer to talk? +91 98203 83719 or +91 98205 18093.