WM Series Wormgear Unit
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Catalog excerpts

WM Series Wormgear Unit - 1

Wormgear Units Imperial Gearing Centres Superior Gear Technology

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WM Series Wormgear Unit - 2

WM Series - Product Features Unique Holroyd tooth profile for maximum torque capacity Double extension Phosphor Bronze beam welded directly onto the cast iron centre ensuring maximum strength under shock load conditions. Hollow output shaft for direct mounting onto machine headshaft. Plug in heavy duty output shaft also Two piece close grain cast iron gear case for strength and absorption of vibrations for quiet running. Sprag clutch backstop option i prevent drive reversals. Heavy duty taper roller maximum load capacity tapped to allow fitting of output flange for greater mounting...

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WM Series Wormgear Unit - 4

ATEX Approval Details ATEX Approval RENOLD Gears products for operating in potentially explosive 9 RENOLDGears units are classified as ATEX Group II Category 2 equipment, which embodies sufficient safeguards to be suitable for use in potentially explosive atmospheres for normal operation and for operation during an expected malfunction. 9 It is essential that there is sufficient lubricant to prevent the gears and bearings running 'dry'. Gear units should be inspected daily for signs of oil leakage, overheating or noisy 9 Gear units should be cleaned at regular intervals depending on the...

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WM Series Wormgear Unit - 5

WM Series - Product Specification Gear Case Bearings The gear cases are of close grained cast iron with all joints and bearing bores accurately machined to ensure oil tightness and precise gear location. Standard metric taper/roller bearings are fitted throughout the WM Series range of units in both single and double extension shaft options. Oil Seals Wormshaft and Wormwheel Semi-dual lip oil seals are fitted to all hollow output shaft units and single lip seals are fitted to the input shaft of all unit sizes and the output of WM9 unit range and all agitator unit types. The worm is integral...

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WM Series Wormgear Unit - 6

WM Series - Product Design Variations Hollow output shaft unit showing standard metric extension input shaft and American extension at the fan end. Standard hollow output shaft with semi dual lip oil seal for added oil retention. Underdriven unit with standard plug-in output shaft. Single and double extension shafts are available with metric American dimensions. Sprag Clutch, anti run-back assembly fitted to the fan extension end of the input shaft, to prevent unit run back. The Sprag Clutch can be supplied as a kit for retro fitting at any time. www.renold.com 6

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WM Series Wormgear Unit - 7

WM Series - Product Design Variations Dry well adaption fitted at the output of the WM Series unit. The non leak feature is particularly important on mixer applications in the food and chemical Industry. Unit fitted with output location flange and double extension output shaft, one standard extension and one longer than standard compensating for the flange. WMA - Agitator unit with output shaft down. The unit is shown with the dry well feature. The output shaft bearings have a greater bearing span to allow for higher external loads imposed by mixer and agitator blades. Agitator unit with...

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WM Series Wormgear Unit - 8

^WM Series - Single Reduction - Mounting & Handling ^ WMSM - Shaft Mounted No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted. Wall Mounting No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted.

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WM Series Wormgear Unit - 9

^WM Series - Single Reduction - Mounting & Handling^ No Sprag backstop fitted. VA Sprag backstop fitted. VB No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted. No Sprag backstop fitted. Sprag backstop fitted.

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WM Series Wormgear Unit - 12

Ordering Procedure - Unit Designation Code To ensure that the correct ‘WM’ Series unit is supplied and that your order is processed without delay, please quote the full designation code as detailed below: Unit Designation Code - Speed Reducer Unit 1 2 3 4 5 WM 4 10 UA M 1 Unit type - WM Series speed reducer unit 2 Unit size - 4, 5, 6 etc. 3 Unit nominal ratio - 5:1, 10:1, 30:1 etc 4 Unit mounting and assembly see pages 8 - 9 5 Unit shaft/bore details M - Metric A - American Unit Designation Code - Motorised Unit 1 2 3 4 5 6 7 8 MWM 4 10 WA 5.5 4 132 M 1 Unit type - WM Series motorised 2...

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WM Series Wormgear Unit - 13

WM Series - Selection Information To select a worm gear unit the following basic information must be known and, if we are to make the selection, should be submitted in full to our Technical Sales Department. Power a) Prime mover, type and output power (kW). b) Gear unit input and output power required (kW). c) For input speeds below 250 rev/min consult our Technical Sales Department giving details of required output torque (Nm) and diameter of driven shaft (mm). Speed Gear unit input and output rev/min. Duty a) The characteristics of the drive eg. degree of impulsiveness of the driven load....

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WM Series Wormgear Unit - 14

WM Series - Selection Examples Mechanical Selection Torque Thermal Selection Torque Mechanical Selection Power Thermal Selection Power Nm = Nm = (kW) = (kW) = Actual Torque (Nm) Requirement Actual Torque (Nm) Requirement Actual Power (kW) Requirement Actual Power (kW) Requirement It can be seen from the ratings tables on pages 28 - 41 that both mineral and synthetic oil ratings are included. Depending upon which type of oil is to be used inside the gear unit will determine which rating are used to make a selection. Example 1 X X X X Mechanical Service (fD) Factor Thermal Service (fT) Factor...

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WM Series Wormgear Unit - 15

^ WM Series - Load Classification by Application ^ Pure liquids Liquids-variable density Brew kettles-continuous duty S Mash tubs-continuous duty S Scale hopper-frequent starts M Clay working machinery Clay working machinery M Reciprocating - single cylinder H Conveyors - uniformly loaded or fed Conveyors - heavy duty Live roll * Crane Drives - not dry dock Bridge travel * Trolley travel * Cable reels Cutter head drives Manoeuvring winches Screen drive Utility winches Main hoist Auxiliary hoist Boom, luffing Rotating, swing or slew Tracking, drive wheels Bucket - uniform load Bucket - heavy...

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