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SEIKO Automatic Mechanical Cal. 7S26C / 7S36C are replacement caliber of Cal. 7S26B / 7S36B. Construction of the C series is same as B series, but using new parts. Since the size of movement is same as B series, the complete movement can be assembled into the watches which originally have the B series move-
PARTS CATALOGUE / TECHNICAL GUIDE Cal. 7S26B, 7S36B [SPECIFICATIONS] /8 Cal. No. Item Time indication Outside diameter Casing diameter Height Additional mechanism Jewels 2 ,600 Hz/hour (6 beats per second) 4.9 mm (x .5) Ø 27.4 mm Ø 27.0 mm l Automatic winding l Date calendar l Day calendar l Date correction function l Day correction function
The type of winding stem is determined based on the design of cases. Check the case number and refer to “SEIKO Casing Parts Catalogue” to choose a corresponding winding stem. • The explanation here is only for the particular points of Cal. 7S26A and 7S36A. The ball-bearing has an inside screw.
The Seiko caliber 7S26 is an automatic movement used in many popular Seiko divers and the entry level Seiko 5 watches. This movement was first released to the market in 1996. The most recent tech sheets found were dated 2011.
Our selection of spare parts for this calibre: Seiko 7S26A and Seiko 7S36A. Some parts are the same as Seiko 7005, you can find them there: 310.020 Balance complete. 301.009 Pallet fork. 285.013 Ratchet Wheel. 381.004 Click. 201.024 Barrel complete with mainspring.
This document lists parts for various Seiko 7S watch movements including the 7S26A, 7S26B, 7S26C, 7S36A, 7S36B, 7S36C, NH25 and NH26. It provides the part name, part number, and notes any changes between the different movement variations.
Seiko 7S26A Movement Parts. We stock a wide range of ETA 7750 parts, many parts are interchangeable between ETA 7750, ETA 7751, ETA 7753, ETA 7754, ETA 7760, and ETA 7765.
