{"id":1922,"date":"2026-10-08T05:59:23","date_gmt":"2026-10-08T05:59:23","guid":{"rendered":"https:\/\/metalite.net\/?p=1922"},"modified":"2026-10-08T06:28:14","modified_gmt":"2026-10-08T06:28:14","slug":"aluminum-worm-gear-reducer","status":"publish","type":"post","link":"https:\/\/metalite.net\/tr\/application\/aluminum-worm-gear-reducer\/","title":{"rendered":"Aluminum Worm Gear Reducer: Specifications, Frame Sizes & Mounting Options | Metalite"},"content":{"rendered":"
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The aluminum worm gear reducer is the most widely specified compact right-angle speed reducer for light-to-medium duty applications. Its die-cast aluminum alloy housing delivers a combination of low weight, natural corrosion resistance, and effective heat dissipation that cast iron housings cannot match at the same frame size \u2014 without sacrificing the structural rigidity needed to handle the tooth forces in a worm gear pair.<\/p>\n

This page covers the full specification range of EPG Canada’s Aluminum Series Worm Gear Reducers: frame sizes, torque and power ratings, standard gear ratios, material specifications, and the mounting configurations available. If you need guidance on which industries and applications benefit most from aluminum housing, see our Aluminum Worm Gearbox Application Guide<\/a>.<\/p>\n

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Why Aluminum Housing? The Material Advantage<\/h2>\n
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\"Die-cast<\/p>\n

Die-cast aluminum alloy housing \u2014 standard on frame sizes 25 through 90<\/p>\n<\/div>\n

Die-cast aluminum alloy \u2014 the ADC12 or similar EN-AC 46000 grade used in these reducers \u2014 provides three tangible engineering advantages over cast iron at the same frame size:<\/p>\n

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30\u201340% Lower Weight<\/p>\n

Aluminum density is roughly 2.7 g\/cm\u00b3 versus 7.2 g\/cm\u00b3 for cast iron. A size-63 aluminum reducer weighs approximately 3.5 kg where the equivalent cast iron unit weighs 5\u20136 kg \u2014 significant in elevated, mobile, or operator-handled installations.<\/p>\n<\/div>\n

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Natural Corrosion Resistance<\/p>\n

Aluminum forms a stable oxide layer that prevents deeper corrosion \u2014 no rust, no paint maintenance. Uncoated cast iron corrodes rapidly in humid or wet environments; aluminum does not, making it the standard choice for food, beverage, pharmaceutical, and outdoor applications.<\/p>\n<\/div>\n

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Better Thermal Conductivity<\/p>\n

Aluminum conducts heat roughly 3\u20134\u00d7 more efficiently than cast iron. In a worm gearbox \u2014 where 10\u201350% of input power is lost as heat depending on ratio \u2014 aluminum housing dissipates that heat faster, reducing oil temperature and extending lubricant and seal service life on intermittent-duty applications.<\/p>\n<\/div>\n<\/div>\n

From size 110 upward, cast iron replaces aluminum in the housing because the larger torques require greater wall section strength. In the specification tables below, sizes 025\u2013090 are aluminum; sizes 110\u2013150 are cast iron.<\/p>\n

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Frame Sizes and Torque \/ Power Ratings<\/h2>\n

The frame size number denotes the center distance (in mm) between the worm shaft axis and the worm wheel shaft axis. Larger center distance = larger gear pair = higher torque capacity. Select the frame size that, at your required ratio, delivers an output torque above your calculated load torque \u00d7 service factor.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Frame Size<\/th>\nCenter Distance (mm)<\/th>\nMax Output Torque (Nm)<\/th>\nInput Power Range (kW)<\/th>\nHousing Material<\/th>\n<\/tr>\n<\/thead>\n
025<\/td>\n25<\/td>\n8<\/td>\n0.06 \u2013 0.09<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
030<\/td>\n30<\/td>\n14<\/td>\n0.06 \u2013 0.18<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
040<\/td>\n40<\/td>\n26<\/td>\n0.09 \u2013 0.37<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
050<\/td>\n50<\/td>\n60<\/td>\n0.18 \u2013 0.75<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
063<\/td>\n63<\/td>\n120<\/td>\n0.37 \u2013 1.5<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
075<\/td>\n75<\/td>\n220<\/td>\n0.55 \u2013 2.2<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
090<\/td>\n90<\/td>\n360<\/td>\n0.75 \u2013 4.0<\/td>\nAluminum alloy<\/td>\n<\/tr>\n
110<\/td>\n110<\/td>\n600<\/td>\n1.5 \u2013 7.5<\/td>\nCast iron<\/td>\n<\/tr>\n
130<\/td>\n130<\/td>\n980<\/td>\n2.2 \u2013 11<\/td>\nCast iron<\/td>\n<\/tr>\n
150<\/td>\n150<\/td>\n1,760<\/td>\n4.0 \u2013 15<\/td>\nCast iron<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Max output torque values are at the lowest efficiency point; actual usable torque depends on ratio and service factor. Sizes 110\u2013150 use cast iron housing. Contact our team for exact dimensional drawings for your frame size.<\/p>\n

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Standard Gear Ratios and Output Speed Reference<\/h2>\n

All frame sizes in the Aluminum Series cover the same standard ratio range in a single stage. Select the ratio that delivers the required output speed from your motor input speed, then verify the output torque at that ratio.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ratio<\/th>\nOutput RPM (1,450 input)<\/th>\nOutput RPM (960 input)<\/th>\nTypical Efficiency<\/th>\n<\/tr>\n<\/thead>\n
5 : 1<\/td>\n290<\/td>\n192<\/td>\n~85\u201390%<\/td>\n<\/tr>\n
7.5 : 1<\/td>\n193<\/td>\n128<\/td>\n~82\u201387%<\/td>\n<\/tr>\n
10 : 1<\/td>\n145<\/td>\n96<\/td>\n~80\u201385%<\/td>\n<\/tr>\n
15 : 1<\/td>\n97<\/td>\n64<\/td>\n~77\u201382%<\/td>\n<\/tr>\n
20 : 1<\/td>\n72<\/td>\n48<\/td>\n~74\u201380%<\/td>\n<\/tr>\n
25 : 1<\/td>\n58<\/td>\n38<\/td>\n~72\u201378%<\/td>\n<\/tr>\n
30 : 1<\/td>\n48<\/td>\n32<\/td>\n~70\u201376%<\/td>\n<\/tr>\n
40 : 1<\/td>\n36<\/td>\n24<\/td>\n~68\u201374%<\/td>\n<\/tr>\n
50 : 1<\/td>\n29<\/td>\n19<\/td>\n~66\u201372%<\/td>\n<\/tr>\n
60 : 1<\/td>\n24<\/td>\n16<\/td>\n~64\u201370%<\/td>\n<\/tr>\n
80 : 1<\/td>\n18<\/td>\n12<\/td>\n~62\u201368%<\/td>\n<\/tr>\n
100 : 1<\/td>\n14.5<\/td>\n9.6<\/td>\n~60\u201366%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Efficiency values are approximate and depend on lubricant viscosity, operating temperature, and load. Switching from mineral to synthetic lubricant can recover 5\u201315% efficiency at ratios above 30:1. For thermal calculations on continuous-duty applications, request the full thermal power rating table.<\/p>\n

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Worm Shaft and Worm Wheel Material Specifications<\/h2>\n
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\"Hardened<\/div>\n

Worm Shaft (Input)<\/p>\n