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    • Worm Gearboxes

    Right-angle gearboxes using worm/worm-wheel design for high reduction and compact mounting.

    Worm gearboxes are right-angle gear drives in which a helical worm (screw) meshes with a worm wheel, turning the drive through 90 degrees while achieving a high reduction in a single, compact stage. Because the worm slides against the wheel rather than rolling like a gear pair, a single worm stage can deliver ratios that would otherwise need two or three gear stages, in a small, quiet, low-cost package. This makes worm units a default choice for conveyors, gates, hoists and positioning duty where compactness and load-holding matter more than peak efficiency.

    The family runs from single-reduction units through double-reduction and helical-worm combinations. Single-stage ratios commonly span about 5:1 to 100:1, with NMRV+NRV combinations reaching several hundred to one. Efficiency depends strongly on ratio and lead angle: low-ratio worms can reach roughly 85-90 percent, while high-ratio units fall toward 60 percent or lower. The same sliding action gives many higher-ratio worms a self-locking tendency, useful for hoists and positioners that must hold a load, though it should be verified per duty rather than assumed. Enclosed-drive practice and gear quality follow AGMA 6034 / ISO 1328 where applicable.

    Construction pairs a hardened, ground alloy-steel worm with a phosphor-bronze worm wheel for conformability and wear resistance. Compact NMRV-style sizes use pressure die-cast aluminium housings; larger frames use cast iron. Bearings are SKF/FAG-equivalent, with shaft seals and ISO VG 220/320 lubrication, often synthetic PAO and lifetime-filled to manage worm-mesh heat.

    Units accept IEC motor adapters, NEMA flanges or free input shafts, output as solid or hollow shaft, and mount in foot, flange (B5/B14) or shaft-mounted arrangements. Service factor is selected per AGMA SF against thermal and shock duty.

    Himalay's MSME partners manufacture worm gearboxes and worm gearmotors with gear-rating to AGMA/ISO 6336 where applicable, ISO 9001 quality systems, load/efficiency test reports and traceability; CE (Machinery Directive), ATEX/IECEx for hazardous areas, and SABER (Saudi Arabia) coordinated as part of the standard order flow.

    Single Reduction Worm Gearbox
    Single Reduction Worm Gearbox
    Double Reduction Worm Gearbox
    Double Reduction Worm Gearbox
    NMRV/NRV Worm Gearbox
    NMRV/NRV Worm Gearbox
    Universal Worm Gearbox
    Universal Worm Gearbox
    Aluminium Worm Gearbox
    Aluminium Worm Gearbox

    Frequently Asked Questions

    When should I specify a worm gearbox instead of a helical or bevel-helical unit?
    Choose a worm gearbox where you want a compact right-angle drive with a very high single-stage ratio, low cost, quiet running, or an inherent self-locking tendency for load-holding. The trade-off is efficiency: worms run roughly 60-90 percent depending on ratio, against ~96-98 percent per stage for helical. For continuous high-power duty where running cost and heat matter, a bevel-helical unit is usually the better right-angle choice; for intermittent, compact or holding duty, the worm often wins on size and price.
    What's the MOQ for worm gearboxes?
    It depends on frame size and ratio. Standard NMRV/NRV aluminium sizes built to catalogue: typical MOQ starts around 25-100 pieces depending on manufacturer and configuration. Larger cast-iron or engineered worm units: as few as 2-10 pieces per size/ratio. Mixed orders consolidated under one spec package generally accept smaller quantities per line.
    Which certifications and compliance options are available?
    Where specified, partner manufacturers provide CE marking under the Machinery Directive, ATEX/IECEx for hazardous-area duty, and ISO 9001 quality systems. Load and efficiency test reports, self-locking verification for the specified ratio, and material traceability can be supplied. IP55/IP65 ingress and corrosion-resistant finishes are available where the duty requires them.
    What ratios, mountings and outputs can be configured, and is self-locking guaranteed?
    Single-stage ratios typically run 5:1 to 100:1, with double-reduction or NMRV+NRV combinations reaching several hundred to one. Inputs accept IEC/NEMA adapters or free input shafts; outputs are solid or hollow shaft with foot, B5/B14 flange or shaft-mounted positions and selectable worm orientation. Self-locking depends on lead angle and ratio and is verified per duty rather than assumed for every unit. Lubrication is ISO VG 220/320, often synthetic PAO and lifetime-filled.
    Do your partners supply to OEMs and to end-client specifications?
    A subset of Himalay's partner network supplies to OEMs in material handling, packaging, sugar and gate/hoist applications, building to their drawings and approved-vendor lists. Share your spec or drawing at inquiry stage and we match a qualified partner; supplier audits can be arranged on a development track where an end client requires them.
    How long does a worm gearbox order take?
    Catalogue NMRV/NRV worm gearmotors: typically 5-9 weeks manufacture, test and packaging. Larger cast-iron or engineered worm units: 10-14 weeks. Full CIF to Rotterdam, Antwerp, Jebel Ali or Dammam is typically 8-12 weeks door-to-door for standard product, and 14-20 weeks for engineered or large units.
    Request a Quote for Worm Gearboxes
    Padamade Private Limited
    IndiaHiranandani Estate, Patlipada, Off G.B Road, Thane West, Maharashtra, India, 400607
    NetherlandsBreitnerstraat, 3015 XG Rotterdam
    UAE804, KM Trading Building, Najda Street, Abu Dhabi City, Abu Dhabi
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