Technical Archive

Rolex
Datejust 36 126231-0022— lug 20mm

Rolex Datejust 36 126231-0022: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 36 Stainless Steel / Everose / Fluted / MOP Diamond / Oyster

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 126231-0022
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

126231-0022

Movement

Rolex caliber 3235 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Rolex Datejust 36 126231-0022 embodies modern watchmaking versatility. Born in 1945, the Datejust defined the prototype of an elegant wristwatch; this two-tone rose gold and stainless steel version with mother-of-pearl dial represents the contemporary evolution of that legacy. The 126231-0022 houses the caliber 3235 Perpetual movement with Chronergy balance wheel, ensuring certified chronometric precision of ±2 seconds per day. The 36 mm case diameter, combined with mother-of-pearl dial that reflects light at varying angles, creates the visual depth that distinguishes sought-after Datejust models. Strap width: 20 mm.

FAQ

What is the lug width of the Rolex Datejust 36 126231-0022?

The Rolex Datejust 36 126231-0022 features a lug width of 20 mm. This measurement represents the distance between the two attachment springs where the strap connects to the case. Respecting this specification is essential to ensure a precise fit without friction on the pins, which could compromise the watch.

What is the best strap for the Datejust 36 126231-0022 with mother-of-pearl dial?

The Datejust 36 126231-0022 with mother-of-pearl dial pairs ideally with alligator leather straps in tobacco brown or dark blue, creating aesthetic contrast without competing with the luminescent dial. Natural-tanned calf leather and burgundy shell cordovan represent sophisticated alternatives, whilst NATO fabric straps offer daily versatility. Your choice depends on your usage context and personal colour preferences.

How do you change the strap on a Rolex Datejust 36?

Changing the Datejust 36 strap requires a specific tool: the spring bar tool. Position the watch with the case facing upward, insert the flat end of the spring bar tool into the slot beside the lug pin, apply gentle pressure to release the spring, then extract the old strap. Proceed with caution to avoid scratching the case. Insert the new strap by aligning the holes at the strap ends with the pins, then reinsert the spring bar tool until the final click signals secure locking.

Is an aftermarket strap compatible with the Datejust 36 126231-0022?

Yes, an aftermarket strap is compatible with the Datejust 36 126231-0022 provided it has a 20 mm lug width. Quality artisanal straps, such as those crafted by Casati Milano, guarantee precise construction tolerances and finishes that do not damage Rolex pins. We recommend verifying with the manufacturer that the strap has been tested on 904L Rolex cases to avoid chemical reactions between leather and steel.

How long does a leather strap last on a Rolex Datejust 36?

The lifespan of a leather strap depends on material and usage patterns. An alligator or shell cordovan strap typically lasts 3–4 years with daily wear, whilst calf leather offers durability of 2–3 years. Vegetable-tanned leather develops a natural patina over time, extending the aesthetic narrative of your watch. NATO fabric straps resist 4–5 years of regular use. Factors such as sun exposure, humidity and wearing frequency influence longevity. Casati Milano provides an 18-month warranty on manufacturing defects.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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The atelier's website: casatimilano.com