BLASI – Distance ring 25.2 x 40 x 1.7
The BLASI – Distance ring 25.2 x 40 x 1.7 is a precision spacer ring used in BLASI revolving door assemblies to set and maintain accurate axial clearance between rotating hub components. Machined to exact inner Ø25.2 mm, outer Ø40 mm and thickness 1.7 mm, this hardened washer ensures correct bearing preload, consistent shaft alignment, and reliable sealing compression across high‑cycle commercial entrance installations.
Product Details
Part function and fit: The BLASI – Distance ring 25.2 x 40 x 1.7 is specified as an axial spacer between mating hub components—typically placed on the drive shaft or around a bearing sleeve—to establish the factory nominal gap required for correct bearing preload and to prevent lateral play that can cause uneven wear or sensor misalignment. Its inner diameter (25.2 mm) fits tightly on nominal 25 mm shafts or on slightly larger journal features where the extra 0.2 mm tolerance assists press fit or tolerance stacking control; the 40 mm outer diameter gives sufficient surface area for stable seating without interfering with adjacent recesses.
Material and durability: Supplied in hardened stainless steel or zinc‑plated alloy (depending on ordering code), the distance ring resists corrosion, retains flatness under clamping loads, and withstands the vibration and thermal cycling typical of continuous revolving door operation. The 1.7 mm thickness is engineered to work with BLASI hub tolerances so that, when used in the nominal stack-up, bearings, seals, and snap rings achieve correct axial engagement without preloading seals excessively.
Article No: 5900084
Additional information
| Brand | BLASI |
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