SBB Em 3/3
| Em 3/3 | |
|---|---|
 Em 3/3 18816 in Visp
|
|
| Numbering: |
SBB 18801–18841 SZU 11 or 836 506 |
| Manufacturer: |
SLM (mechanical part) BBC / SAAS (electrical part) |
| Year of construction (s): | 1959–1960 (18801–806) 1962–1963 (18807–841) 1962 (SZU 11) |
| Axis formula : | C. |
| Length over buffers: | 10,020 mm |
| Total wheelbase: | 4,000 mm |
| Service mass: | 49 t |
| Top speed: | 65 km / h |
| Installed capacity: | 441 kW (600 hp ) |
| Hourly output : | 324 kW (440 hp ) |
| Starting tractive effort: | 118 kN (18801–806) 124 kN (18807–841, SZU 11) |
| Hourly traction: | 69 kN at 17 km / h |
| Driving wheel diameter: | 1040 mm |
| Motor type: | SLM 8 YD 20 TrD (18801–806) SLM 6 VD 20 TrTH (18807–841, SZU 11) |
| Rated speed: | 1200 min −1 |
| Power transmission: | electric |
| Number of traction motors: | 2 |
| Drive: | Coupling rods |
| Translation levels: | 1 (1: 6.75) |
The Em 3/3 is a diesel-electric shunting locomotive of the Swiss Federal Railways (SBB) and the Sihl Valley-Zurich-Uetliberg-Bahn (SZU).
From 1959 to 1963, the SBB purchased the lightweight Em 3/3 shunting machines. They replaced the E 3/3 steam locomotives . The Sihltalbahn at the time joined the order with another locomotive, the Em 3/3 11 “Leu”. In terms of performance, the Em 3/3 belongs to the class of the Ee 3/3 standard electric shunting locomotives . The prototypes 18801 - 18806 are equipped with an eight-cylinder V diesel engine from SLM Winterthur . A more economical and lighter six-cylinder supercharged SLM diesel engine was installed in the series locomotives .
With the introduction of the UIC type designation , the SBB diesel locomotives were renamed Em 830. The twelve-digit UIC number is under the number plate of the SBB infrastructure locomotives.
With the advent of the SBB Am 843 diesel locomotive , the Em 3/3 are gradually taken out of service. The former SZU diesel locomotive Em 3/3 836 506 now belongs to the Club del San Gottardo in Mendrisio. The ex SBB Em 3/3 18822 is at the Draisinen Sammlung Fricktal association in Koblenz. The ex SBB Em 3/3 18814 belongs to the Etzwilen-Singen museum railway.
literature
- Hugo Loosli: The latest development of the SBB diesel locomotives, Chapter 4: The light diesel-electric shunting locomotive Em 3/3 18801 uf , in: Schweizerische Bauzeitung , Volume 79 (1961), Issue 24, page 413 ff., ISSN 0036-7524 (E -Periodica)
- Peter Willen: Locomotives in Switzerland, standard gauge traction units . 3rd edition, Orell Füssli, Zurich 1975, ISBN 3-280-00800-X .
Web links
- The SBB Em 3/3 18,801 - 18,841 from Bruno Lämmli
- Salem Blum: Railway Pictures