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The Rolex Calibre 3135-135 Automatic Device Lower Bridge (Ref. No. 3135-135) is a genuine OEM component manufactured in Switzerland, forming the structural foundation of the automatic winding module for the legendary Rolex Calibre 3135 self-winding movement and its variants. Together with the upper bridge (No. 3135-140), this precision-machined stainless steel lower bridge houses and secures the automatic winding components including the two reversing wheels (No. 3135-540), the driving wheel for ratchet wheel (No. 3135-510), and the pinion for oscillating weight (No. 3135-550).
As the fixed plate of the bidirectional winding system, this exact-match drop-in replacement part is essential for professional watchmakers restoring worn, damaged, or missing original components, preserving the legendary reliability of the Calibre 3135 automatic movement.
Genuine OEM manufacturing – Authentic Rolex part crafted in Switzerland to original factory tolerances, ensuring perfect fit, function, and long‑term reliability
Automatic module structural foundation – Forms the lower half of the two-part automatic device module (No. 3135-145), sandwiching and securing the complete bidirectional winding train including reversing wheels, driving wheel, and pinion
Precision endshake adjustment – Houses the adjustable jewel (A) that allows precise regulation of the driving wheel for ratchet wheel endshake (0.02 to 0.06 mm), critical for smooth automatic winding operation
Wide caliber compatibility – Designed for Calibre 3135 (date version) and cross‑compatible with Calibre 3130, 3131, 3132, 3136, 3155, 3156, 3175, 3185, 3186, and 3187, as well as Calibre 3115, 3116, and 3117 for Ref. 5100
3-screw secure mounting – Secured to the movement by three precision screws (No. 3135-5110), ensuring stable positioning of all automatic winding components against shock and vibration
| Parameter | Value |
|---|---|
| Part Number / Ref. | 3135-135 |
| Manufacturer / Brand | Rolex (Genuine OEM) |
| Country of Manufacture | Switzerland |
| Component Type | Automatic Device Lower Bridge (Ponte Inferiore Automatico) |
| Material | Stainless Steel |
| Position within Movement | Automatic winding module (lower plate) |
| Mounting Screws | 3 (No. 3135-5110) |
| Housing Components | Two reversing wheels (3135-540), driving wheel for ratchet wheel (3135-510), pinion for oscillating weight (3135-550) |
| Associated Component | Upper bridge for automatic device (No. 3135-140) |
| Compatible Calibers | Rolex Calibre 3135, 3130, 3131, 3132, 3136, 3155, 3156, 3175, 3185, 3186, 3187, plus Calibre 3115, 3116, 3117 (Ref. 5100) |
| Compatible Models | Submariner Date (Ref. 16610, 116610LN, 116610LV), Datejust 36, Sea-Dweller (Ref. 16600, 116600), Yacht-Master, Milgauss, GMT‑Master II |
| OEM Part Category | Automatic winding system / automatic device module |
| Unit Quantity | 1 piece per order |
Replacement of worn, cracked, or damaged lower bridges during professional overhaul of Rolex Calibre 3135 watches, including Submariner Date, Datejust 36, Sea‑Dweller, Yacht‑Master, and Milgauss models
Restoration of automatic winding modules where the lower bridge has sustained impact damage from a dropped watch, resulting in misalignment of the reversing wheels
Watch repair workshops and authorized service centers performing full disassembly of the automatic device module (No. 3135-145) as part of a complete movement overhaul
Professional restoration projects seeking exact-match OEM parts to preserve original mechanical functionality and factory specifications
Q1: Is this automatic device lower bridge an authentic genuine Rolex part or a generic aftermarket replica?
This is a 100% genuine Rolex OEM part, manufactured in Switzerland to original factory specifications. It is not a generic or aftermarket product. Multiple trusted Chrono24 sellers list this component as “original and new product,” and listings explicitly state “SOLD AS IT GUARANTEED TO BE 100% AUTHENTIC”. Each unit is produced under Rolex‘s strict quality control and is identical to the component originally fitted in Calibre 3135, 3130, and 3185 movements.
Q2: Which Rolex watch models and calibers is this part compatible with?
This lower bridge is designed for Rolex Calibre 3135 (found in Submariner Date references 16610, 116610LN, 116610LV; Datejust 36; Sea‑Dweller 16600; Yacht‑Master; and Milgauss) and is widely cross‑compatible with Calibre 3130 (no‑date Submariner, Air‑King, Explorer, Oyster Perpetual), Calibre 3185 (GMT‑Master II), and Calibre 3155 (Day‑Date), as well as Calibre 3131, 3132, 3136, 3156, 3175, 3186, and 3187. It also fits Calibre 3115, 3116, and 3117 used in the rare Ref. 5100. It is not interchangeable with Calibre 3235 components.
Q3: Can a hobbyist or amateur watch enthusiast install this automatic device lower bridge?
No. Installing the lower bridge requires full disassembly of the automatic device module, specialized watchmaking tools (precision screwdrivers, tweezers, movement holders, proper torque control), and thorough knowledge of Rolex’s specific assembly sequences and lubrication requirements. The factory technical manual states that after refitting the lower bridge, the endshake of the driving wheel for ratchet wheel must be checked and adjusted using the adjustable jewel (A) to fall within the precise 0.02 to 0.06 mm range. Three screws (No. 3135-5110) must be tightened with care to avoid cross-threading or stripping, which would compromise the entire automatic winding system. This replacement should always be performed by a qualified professional watchmaker or an authorized Rolex service center.
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