5-Axis CNC & Horological Architecture
The Custom Hublot Big Bang Original Chronograph 44mm Cal. HUB4100 Reference 301.SX.1170.RX is a 5-axis Swiss CNC commission machined in 904L Stainless Steel Custom Architecture (42.0 mm x 14.5 mm) weighing 120.8g on our Mettler-Toledo analytical balance, driven by Hublot Unico Flyback Chronograph Cal. HUB1280 regulated to +0.6 s/d, 301 deg at 28,800 vph with a 72-hour power reserve beneath a double anti-reflective sapphire crystal.
| 01 / CNC Blueprint Entity & Reference | Hublot — Big Bang / Square Bang Unico | Ref. 301.SX.1170.RX | SKU: AT-CNC-301.SX.1170.RX-W347 |
|---|---|
| 02 / 5-Axis CNC Metallurgy & Gold Purity | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| 03 / Analytical Bench Weight (1:1 Reference Mass) | 120.8g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| 04 / Custom Bezel, Gem-Setting & Case Geometry | Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 120.8g 904L Steel Edition • 42.0 mm x 14.5 mm |
| 05 / Regulated Super Clone Movement Calibre | Hublot Unico Flyback Chronograph Cal. HUB1280 — Swiss Super Clone Mechanical Calibre Regulated to +0.6 s/d, 301 deg |
| 06 / Barrel Power Reserve & Balance Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| 07 / Optical Sapphire Crystal (Double AR) & Sealing | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 10 ATM |
| 08 / Bespoke Dial & Integrated Bracelet Spec | 42.0 mm x 14.5 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Integrated Solid Link Bracelet & Deployant Clasp |
Engineered inside our Geneva 5-axis CNC Hublot custom atelier, the Custom Hublot Big Bang Original Chronograph 44mm Cal. HUB4100 Reference 301.SX.1170.RX is machined from solid 904L Stainless Steel Custom Architecture billets to micron-level tolerances (42.0 mm x 14.5 mm). Every bevel, lug chamfer, and Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands is hand-finished on our watchmaker bench, yielding a certified reference weight of 120.8g verified under our Fischer XRF and Mettler-Toledo QC protocol.
What Are the Horological & Metallurgical Benchmarks of Hublot Big Bang Ref. 301.SX.1170.RX?
The Hublot Big Bang Reference 301.SX.1170.RX is a precision-engineered luxury timepiece crafted in 904L Stainless Steel Custom Architecture (42.0 mm x 14.5 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 120.8g, because the Hublot Unico Flyback Chronograph Cal. HUB1280 movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core CNC & Chronometric Specifications:
- Blueprint Reference: Custom Hublot Big Bang Original Chronograph 44mm Cal. HUB4100 — Official Ref. 301.SX.1170.RX (SKU: AT-CNC-301.SX.1170.RX-W347).
- 5-Axis CNC Metallurgy: 904L Stainless Steel Custom Architecture case (42.0 mm x 14.5 mm) and Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal with hand-polished chamfers.
- Verified Bench Mass: 120.8g confirmed on a Mettler-Toledo analytical gram scale prior to dispatch.
- Super Clone Calibre: Hublot Unico Flyback Chronograph Cal. HUB1280 operating at 28,800 vph (4 Hz) with 72-hour power reserve and +0.6 s/d, 301 deg accuracy.
- Sapphire Optics & Sizing: Double anti-reflective sapphire crystal, 100m / 10 ATM sealing, and 19 wrist sizing options (14.0–22.0 cm).
Within the Hublot Big Bang horological sub-silo, collectors also compare the Hublot Big Bang Evolution Chronograph 44mm Cal. HUB4200 Ref. 301.QX.1740.RX (120.8g) and the Hublot Big Bang Unico Flyback Chronograph 42mm Ref. 441.NX.1171.RX (120.2g).
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- Technical Research Monograph: 5-Axis Swiss CNC Milling Solid 18K Gold Watch Cases (±2um) (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K CUSTOM Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & 4K QC Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
How is the 904L Steel Edition case of this Hublot 301.SX.1170.RX machined?
Our Geneva CNC specialists mill the monobloc middle case, bezel, and bracelet geometry on 5-axis Swiss machining centers in 904L Stainless Steel Custom Architecture to achieve the authentic 120.8g reference mass.
Can the bracelet or strap be pre-sized to my exact wrist circumference?
Yes. Choose from 19 precision wrist circumference options (14.0 cm to 22.0 cm, or full unsized factory length). All removed solid links are sealed inside your presentation box.
How is the Hublot Unico Flyback Chronograph Cal. HUB1280 tested on the atelier workbench?
We record a personalized 4K bench video showing the Hublot Unico Flyback Chronograph Cal. HUB1280 (28,800 vph, 72-hour reserve) running at +0.6 s/d, 301 deg on our Witschi Chronoscope alongside Fischer XRF and Mettler-Toledo gram scale verification.
What dial and bezel specifications distinguish Hublot Big Bang Ref. 301.SX.1170.RX?
Reference 301.SX.1170.RX combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 42.0 mm x 14.5 mm 904L Stainless Steel Custom Architecture case weighing 120.8g, verified via Fischer XRF spectroscopy and powered by Hublot Unico Flyback Chronograph Cal. HUB1280.
Custom Hublot Big Bang Original Chronograph 44mm Cal. HUB4100 Ref. 301.SX.1170.RX
5-Axis Swiss CNC 904L Stainless Steel Custom Architecture • 120.8g Verified Mass • Regulated Hublot Unico Flyback Chronograph Cal. HUB1280