Mainspring for Automatic Wristwatches

Mainspring for wristwatches or pocket watches

Scope of delivery: 1x mainspring for automatic movements

depending on your choice

– Images are for illustration purposes –

For some springs, the actual diameter differs from the values given in the drop-down menu. Please order only according to the corrected diameters below (see rows marked in red), then everything will fit.

The main image is for demonstration purposes only

Over approx. 90 percent of the mainsprings are of the Tropicama or Actuel brand.

According to the packaging, the mainsprings have the following properties:

Tropicama: Break-resistant, rustproof, tropic-proof, fatigue-free, antimagnetic

* 1.05×11.0x0.115×310 not fixed in a ring, price 12.90 Euro

These springs must be installed in the barrel.

* 1.05×11.0x0.115×310 fixed in a plastic ring as shown, price 16.90 Euro

• The information in the drop-down menu stands for

Width (mm) – Diameter (mm) – Thickness (mm) – Length (mm)

For example:

1.8 – 11.0 – 0.12 – 380

Not all entries are immediately visible in the drop-down menu; please scroll down to see them.

* DUROWE 7520 ACTUEL or Tropicama (Durowe 7525-1, 7526-1, 7527-1, 7528-1)- 1.30-9.60-0.105-315

* FE 4620 / CUP 4620,

* FELSA 380, FELSA 382, 1.30-6.5-0.07-200 – dimensions are correct –

* FELSA 4000 ACTUEL,

* OTERO 77, OTERO 78, OTERO 79, OTERO 792, approx.: 1.20-8.60-0.095-320

* PUW 1560 ACTUEL,

* DUROWE 270, 1.10-6.0-0.06-240 – dimensions are correct –

* HB 113 / HB 213 / HB 313 / HB 122, 1.10-9.0-0.105-305 – dimensions are correct –

* BID 12” BID 114, 1.10-9.5-0.1125-280, “Actual diameter: approx. 9.6 mm”

* 1.10-10.5-0.12-330,

* Förster 220, approx.: 1.10-10.0-0.12-340

* Förster 420 original ( Junghans 655.02 ), approx.: 1.15-6.10-0.08-200

* BID 9 3/4″ BID 910/1, 1.20-8.5-0.085-310,- dimensions are correct –

* 1.15-9.0-0.11-(305-320), – dimensions are correct –

* 1.15-9.5-0.11-(305-320), – dimensions are correct –

* 1.20-8.7-0.09-285, – dimensions are correct –

1.20-9.0-0.11-260, “Actual diameter: approx. 9.2 mm”

Original H. Becker part for HB 112, 113, 213, 313, 412, 413 – 1.20-9.0-0.105-305,

* DUROWE 510, 1.20-9.45-0.10-310, “Actual diameter: approx. 9.15 mm”

* PUW 1260/1, 1.20-9.5-0.1075-300 “Actual diameter: approx. 10 mm”

* ETA 2724, 1.25-11.0-0.135-400, – dimensions are correct –

ETA 2722 – ETA 2722R, ETA 2724 – ETA 2724R, ETA 2728, ETA 2730,

ETA 2732 – ETA 2732R, ETA 2734 – ETA 2734R, ETA 2738

* AS 913 / AS 1250, 1.30-7.5-0.08-240, – dimensions are correct –

* ETA 1307A, ETA 1320 ETA 8 3/4″ – 10 1/2″, 1.30-7.5-0.08-260, – dimensions are correct –

* H&P 420/ H&P 421, 1.30-9.5-0.10-360, – Actual diameter: approx. 9.6 mm –

* BID 104 / BID 112 – BID 12″ 1.35-9.5-0.1025-305, – Actual diameter: approx. 9.6 mm –

* BIDLINGMAIER 11 1/2″, 1.35-9.5-0.115-280, – Actual diameter: approx. 9.6 mm –

* AS 1320, AS 1323, AS 1393, 1.40-7.5-0.08-240, – dimensions are correct –

* AS 1366, AS 1555, 1.40-8.5-0.10-270, – Actual diameter: approx. 8.6 mm –

* FÖRSTER 80, FÖRSTER 81, 1.40-9.0-0.10-300, – dimensions are correct –

* DUROWE 552, 1.40-9.0-0.1075-260, – Actual diameter: approx. 9.15 mm –

HOHL 69/1123, 1.40-9.0-0.11-270, – Actual diameter: approx. 9.15 mm –

DUROWE 1162, DUROWE 1278, 1.40-9.45-0.0925-315 – Actual diameter: approx. 8.9 mm –

1.40-9.55-0.0925-315 – dimensions are correct –

FELSA 11.5” 415/690, 1.40-10.1-0.11-320, – dimensions are correct –

BIDLINGMAIER 70, BID 70, 1.45-6.25-0.0675-195, – dimensions are correct –

* PUW 54, PUW 59, PUW 570, PUW 590, 1.45-10.8-0.0975-350, – dimensions are correct –

* AS 1513/33-1477-1635/57, 1.50-6.0-0.065-205, – dimensions are correct –

* OSCO 1064/65, ETA 1256/5B 1.50-9.0-0.10-290, – Actual diameter: approx. 9.15 mm –

* BIDLINGMAIER 13”, 1.50-9.5-0.0975-300, – Actual diameter: approx. 9.15 mm –

* ETA 2375 / ETA 2378, 1.50-10.0-0.11-340, – dimensions are correct –

* AS 1081/ AS 1170/ AS 1171/ AS 1173/ AS 1049, 1.60-7.5-0.08-250, – dimensions are correct –

* ETA 834, 12” – 1.60-8.5-0.09-290, – dimensions are correct –

* KIENZLE 57/19, 12” – 1.60-8.5-0.095-285, – Actual diameter: approx. 8.15 mm –

* KIENZLE 57/17, 12” – 1.60-8.5-0.105-270, – Actual diameter: approx. 8.6 mm –

* JUNGHANS 83/1, 12” – 1.60-10.5-0.11-350, – Actual diameter: approx. 10.10 mm –