Round-Ended and Half-Round Keys (Stainless Steel)

Specifications

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Compare 2 models in the same series by specification.

How to choose Machine Element Components

Points to check when selecting, with the values for this product (4801R〜4879K).

1. 1. Select a width and height that fit the keyway

   This product: 幅b 3〜12 mm

   The key width b and height h are paired according to standard dimensions matched to shaft diameter, and should be selected to suit the keyway dimensions on the shaft and the mating part (gear or pulley). The listed products have widths of 3 to 14 mm and heights of 3 to 9 mm. A loose width fit causes rattling, while a tight fit prevents assembly.

2. 2. Check height against keyway depth combination

   This product: Height h 3〜8 mm

   The key height h must be appropriate relative to the combined depth of the shaft keyway and the hub-side keyway. If it is too high, the mating part will not fit; if it is too low, the transmissible torque will be insufficient. Verify the nominal dimensions in the standard table together with the width.

3. 3. Determine length by hub length and transmitted torque

   This product: Length L 10 to 75 mm

   The key length L should fall within the length of the gear or pulley hub (bore section), and should be determined by whether its shear and surface pressure strength are sufficient for the transmitted torque. The listed products have lengths of 10 to 80 mm. Also confirm that the end shape of double round or single round keys matches the shaft keyway shape (such as the round end produced by end-mill machining).

4. 4. Choose material to suit the operating environment

   This product: Material SUS316

   For general machinery, carbon steel such as S50C is used; for environments exposed to water or chemicals, and for food-related equipment, stainless steel such as SUS316 with high corrosion resistance is used. Pay attention to strength differences from key, shaft, and hub material combinations, and to corrosion caused by contact between dissimilar metals.

5. 5. Match covers to fan outer diameter

   For fan motor covers (fan guards), select a model that fits the outer diameter D of the fan being installed. The listed products have outer diameters of 51 to 154 mm. Also confirm the mounting hole positions and whether the surface treatment, such as trivalent chromate treatment, meets the corrosion resistance requirements of the installation environment.

6. 6. Check wire diameter and inner diameter for pins and springs

   Pins and springs made from wire material vary in strength and spring force depending on wire diameter. The listed products have wire diameters of 1.2 to 1.8 mm and inner diameters of 27 to 31 mm. Select by verifying the dimensional relationship with the mating shaft or hole and whether the wire diameter suits the required load.

This guide was written by AI based on the listed products' documents and specification items.

About Machine Element Components and all products

Description

Made of SUS316 with corrosion resistance. Sold in packs of 5 per bag, with same-day shipping available.

FAQ

Q. What is the material of Round-Ended and Half-Round Keys (Stainless Steel) 4801R to 4879K?

A. It is made of SUS316. It is a corrosion-resistant material.

Q. What are the dimension ranges of Round-Ended and Half-Round Keys (Stainless Steel) 4801R to 4879K?

A. Width b is 3 to 12 mm, height h is 3 to 8 mm, and length L is 10 to 75 mm.

Q. How many pieces are in Round-Ended and Half-Round Keys (Stainless Steel) 4801R to 4879K, and what are their applications?

A. They are sold in packs of 5 per bag. They are used for fixing shafts to gears and pulleys.

Q. Is Round-Ended and Half-Round Keys (Stainless Steel) 4801R to 4879K available for same-day shipping?

A. Yes, same-day shipping is available.

Written by AI based on the content of the source documents.

Source documents

• Catalog スプリングネット 製品カタログ（ページ抜粋） 43 pages Open page 13
  Found on: https://www.samini.co.jp/catalog_list/