bottom pulley

Garage Door Cable Pulley: Pulley or Bracketed?

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Reference Standard: Relevant material and performance testing standards should be applied where appropriate; the supplied catalog evidence does not identify a model-specific testing standard for these pulley items. A Garage Door Cable Pulley request can describe more than one product form. A buyer may need a standalone pulley, or the required scope may extend to a cable pulley with bracket. That distinction should be settled before dimensions, installation details, or interchangeability are discussed. The available catalog records identify three relevant products: BT-901 is a 4-inch pulley with 1.8 mm thickness and galvanized finish, BT-902 is a 3-inch pulley with 1.5 mm thickness and galvanized finish, and BT-904 is designated as … 続きを読む

ケーブル適合性に関するガレージドア用プーリーの比較

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Garage Door Pulley Comparison for Cable Fit Reference Standard: Relevant material and performance testing standards may include dimensional inspection practice, visual coating inspection, and general corrosion evaluation logic such as ASTM B117 for salt spray exposure context, without treating any unlisted salt spray result as verified for this catalog item. Short Answer A garage door pulley should not be judged by product name alone. The catalog confirms BT-901 as a 4 inch galvanized pulley with 1.8 mm thickness, BT-902 as a 3 inch galvanized pulley with 1.5 mm thickness, and BT-904 as a galvanized bottom pulley with 3.75 mm bracket thickness; these verified points are enough to compare cable direction, … 続きを読む