Bevel gearboxes
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Bevel gearboxes

Bevel gearboxes BG Series © Copyright SERVOMECH This catalogue contents are under publisher copyright and may not be reproduced unless permission is agreed. Every care has been taken to ensure the accuracy of the information contained in this catalogue, but no liability can be accepted for any errors or omissi

Bevel gearboxes BG Series Bevel gearboxes description The SERVOMECH s.p.a. bevel gearboxes BG Series is the result of an accurate and modern design technology and of the precise calculation of each single component and its assembling, which allows to ensure the declared performances with a high safety factor. Their development and production, totally “Made in Italy”, are carried out following the quality management procedures that SERVOMECH s.p.a. has adopted inside the company according to the UNI EN ISO 9001:2008 norm (the compliance of the quality management system to this standard is...

Bevel gearboxes BG Series

Bevel gearboxes BG Series Materials and components Housing ▪ cubic shape ▪ material: grey cast iron EN-GJL-250 (UNI EN 1561) ▪ all 6 sides machine finished ▪ on request: stainless steel Covers and hubs ▪ material: grey cast iron EN-GJL-250 (UNI EN 1561) ▪ machining: internal centring tolerance h7, outer centring tolerance f7 ▪ on request: stainless steel Solid shafts ▪ material: carbon steel C45E +H +QT (UNI EN 10083-2), hardened and tempered ▪ machining: cylindrical end, ground in tolerance j6, with key according to DIN 6885 Part 1 ▪ on request: stainless steel shaft end with spline profile...

Bevel gearboxes BG Series Bevel gearbox selection The selection of a bevel gearbox depends on several application factors: ▪ the kinematic scheme of the application to determine the design form, the kinematic scheme of the gear assembling and the shafts’ rotation directions; ▪ torque and rotation speed required by the load (operating machine); ▪ load variability, regarding the operating machine and its inertia; ▪ working cycle: number of starts-up per hour, operating time in hours per day, duty cycle; ▪ environmental conditions, ambient temperature, presence of aggressive agents; ▪ service...

Bevel gearboxes BG Series The daily operating factor fu considers the number of operating hours per day, referring to operating under load with duty cycle required by the application: Operating hours / day The service life factor fd considers the life time required by the application compared to the life time calculated with performances shown in the tables (average value 10 000 hours), with reference to the gears. Theoretic service life [hours] 20 000 fd With the calculated input power P P = Pn × f c × f u × f d it is possible to calculate the torque Mt2 required on the gearbox output,...

Bevel gearboxes BG Series Thermal power limit (PT) After the gearbox size has been determined, it is necessary to verify the thermal operating conditions, which means to verify if the selected gearbox can operate in the required conditions without risk of overheating of the oil lubricant and of the components. Each gearbox has a thermal power limit PT, which is determined based on continuous operating duty cycle over max. 3 hours at 20°C environment temperature, value stated in the table at the bottom of this page, which must not be exceeded without a controlled and forced cooling. In case...

Bevel gearboxes BG Series Design input: solid shaft, cylindrical with key, STANDARD diameter (designation: S) output: solid shaft, cylindrical with key on one of the two sides (designation: M1) input: solid shaft, cylindrical with key, LARGE diameter (designation: R) output: solid shaft, cylindrical with key on one of the two sides (designation: M1) input: solid shaft, cylindrical with key, STANDARD diameter (designation: S) output: solid shaft, cylindrical with key on both sides (designation: M2) input: solid shaft, cylindrical with key, LARGE diameter (designation: R) output: solid shaft,...

Bevel gearboxes BG Series input: EC motor flange and hollow shaft with cylindrical hole and keyway output: solid shaft, cylindrical with key input: IEC motor flange and hollow shaft with cylindrical hole and keyway output: solid shaft, cylindrical with key on both sides (designation: M2) input: IEC motor flange and hollow shaft with cylindrical hole and keyway output: hollow shaft, cylindrical hole with keyway input: IEC motor flange and hollow shaft with cylindrical hole and keyway ^\ ' ■ ' output: solid shaft with hub, cylindrical with key STANDARD diameter (designation: S1) input: IEC...

Bevel gearboxes BG Series Technical features summary SIZE Housing side dimensions [mm] Total efficiency () Input: solid shaft, cylindrical with key, STANDARD diameter [mm] Input: solid shaft, cylindrical with key, LARGER diameter [mm] Output: solid shaft, cylindrical with key Output: hollow shaft with cylindrical hole and keyway Output: solid shaft with hub, cylindrical with key, STANDARD diameter [mm] Output: solid shaft with hub, cylindrical with key, LARGE diameter [mm] Input: IEC motor flange Gearbox housing, shaft hub and covers material grey cast iron EN-GJL-250 (UNI EN 1561) Solid...

Bevel gearboxes BG Series Technical features summary BG 166 SIZE Housing side dimensions [mm] Ratio Input: solid shaft, cylindrical with key, STANDARD diameter [mm] Input: solid shaft, cylindrical with key, LARGER diameter [mm] Output: solid shaft, cylindrical with key Output: hollow shaft with cylindrical hole and keyway Output: solid shaft with hub, cylindrical with key, STANDARD diameter [mm] Output: solid shaft with hub, cylindrical with key, LARGE diameter [mm] Input: IEC motor flange Gearbox housing, shaft hub and covers material grey cast iron EN-GJL-250 (UNI EN 1561) steel C45E +H...

Bevel gearboxes BG Series Nominal performances – torque and power SIZE Thermal power limit [kW] The torque and power values stated in the Nominal performances table refer to a minimum service life of 10 000 hours at following operating conditions: ▪ applied load: uniform and without variations ▪ ambient temperature: 20°C ▪ driving unit: electric motor ▪ thermal power limit value calculated considering a ▪ rotation direction: one-way continuous operating time over 3 hours at nominal ▪ 1 (one) start-up per hour performances ▪ operating hours