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Sectional drawing of the BS 40 A gear motor Side view with a partial section through the gearbox: fan cover and finned motor on the left, terminal box on top, the helical gearbox with two gear stages, flange and output shaft on the right. L = 445 mm 1 2 3 4 5 6 7

Gear motors for conveying and packaging machinery. Designed and built in Steyr, Austria.

Size a drive
motor power
0.18–7.5 kW
output torque
120–1,600 Nm
ratio
i 3.6–112

Seven assemblies on one axis.

Since 1962 we have built helical gear motors for machine builders in 31 countries. Five frame sizes, ground gearing, and every unit runs on the test bench before it ships.

BS series · BS 40 A · 1.1 kW

Drag to rotate

Parts list · BS 40 A · 1.1 kW

  1. Galvanised and painted sheet steel. Guides the fan’s cooling air across the fins.

  2. Die-cast aluminium with 28 cooling fins, insulation class F, IP55, inverter-rated.

  3. Rotatable in 4 × 90° steps, M25 cable entry. Available pre-wired with a connector.

  4. Grey cast iron EN-GJL-250, cast in one piece. Bearing seats machined in a single setup.

  5. Two or three stages, case-hardened and ground. Flank modification keeps noise below 62 dB(A).

  6. Spigot to EN 50347, four through holes, face-turned.

  7. 42CrMo4 tempered steel with a DIN 6885 key. Double shaft seals.

Hobbing a helical gear · module 1–6

From raw part to test run in one plant

  1. Machining IT6

    Housings on two machining centres in a single setup, bearing seats to IT6.

  2. Gear cutting m 1–6

    Hobbing and gear shaping from module 1 to 6.

  3. Hardening per batch

    Case hardening in our own furnace, case depth recorded for every batch.

  4. Grinding Q6 · DIN 3962

    Profile grinding of the flanks to gear quality 6 per DIN 3962.

  5. Assembly 5 lines

    One line per frame size, every bolt torque logged.

  6. Test run 15 min

    Every drive runs for 15 minutes under load: noise, temperature, sealing.

On 14,000 m² in Steyr we machine housings, shafts and gears ourselves. Bearings, seals and castings are bought in – most of them from Upper Austria.

Certified to ISO 9001 since 1998 and to ISO 14001 since 2011. Every drive runs on the test bench before it ships, with the report filed under its serial number – and standard versions leave the plant ten working days after the order.

Size a drive

Pick frame size, power, ratio and mounting. The data sheet calculates with rated speed at 50 Hz and tells you straight away whether the combination holds.

Frame size
Motor power kW
i = 19.6

73.0 rpm at the output

Mounting

Data sheet

BS40A-90S4-i19,6

Permitted. The service factor covers continuous duty with moderate shocks.

Length 445 mm⌀30 k6
Dimension sketch, not to scale
Rated power P₁
1.1 kW
Motor speed n₁
1,430 min⁻¹
Ratio i
19.6
Gear stages
2 stages
Output speed n₂
73.0 min⁻¹
Output torque M₂
138 Nm
Permitted torque M₂max
500 Nm
Service factor f_B
3.62
Efficiency η
96 %
Output shaft
⌀ 30 k6
Permitted radial load F_R
6,500 N
Oil fill CLP PG 220
0.9 l
Weight
31.5 kg
Motor
90S4 · IE3 · IP55 · ins. class F
Supply
230/400 V Δ/Y · 50 Hz

Guide values for S1 duty at 50 Hz. The data sheet sent with your enquiry is binding.

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For BS40A-90S4-i19,6

What should we send?

Where our drives run

Around 70 percent of our volume goes to machine builders who fit our drives in series. Sizing depends on the application, so we start by asking about load, cycle and environment.

Service and spare parts

Spare parts by serial number

A Brenner drive runs about 40,000 operating hours before its first overhaul. After that we repair it rather than replace it – including units built before 2000.

Spare parts from stock. Seal kits, bearings, shafts and fan covers for every frame size. Order by 2 pm, ships the same day.

Repair and overhaul. Findings with photos and a fixed price within three working days of arrival.

Like-for-like replacement. We replace other makes’ drives from the nameplate – with an adapter flange where needed.

Commissioning and training. On site at your plant or in our training room in Steyr, for maintenance and sales support staff.

Working at Brenner

180 people work here, most of them for more than ten years. Every year six apprentices start in machining, mechatronics and electrical engineering.

  • CNC machinistFull time · two shifts
  • Gearbox assembly technicianFull time
  • Export sales engineer, France/BeneluxFull time · travel
  • Apprenticeship in machiningStarts September 2027
Apply at karriere@brenner.beispiel.at

Contact for machine builders and distributors

Tell us the machine, the load and the cycle. We size the drive and send the data sheet and STEP model within two working days.

Brenner Antriebstechnik GmbHIndustriezeile 184400 Steyr, Austria 20 minutes from the A1 motorway, exit Enns-Steyr. Deliveries via gate 3.