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Set Collar SCK3520S

Model SCK3520S / SCK / Iwata Seisakusho Co., Ltd. (Official website) / Listed on page 1 of the document

Wedge-clamp type set collar (S type) with bore diameter φ35. Normal type allowable thrust load 4400 N, allowable radial load 96.3 N·m during tightening.

Last verified: (date the content was verified against the source document)

Set Collar SCK3520S on page 1 of Iwata Seisakusho Co., Ltd. "セットカラー 技術資料 125 クサビカラー性能評価試験結果表"
Source: Iwata Seisakusho Co., Ltd.「セットカラー 技術資料 125 クサビカラー性能評価試験結果表」page 1
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Specifications

Inner diameter d 35 mm
Allowable thrust load 4400 N
Permissible radial load 96.3 N·m
Allowable thrust load (clamp lever) 1200 N
Allowable radial load (clamp lever) 27.8 N·m

SCK model comparison

Compare 20 models in the same series by specification.

Model Inner diameter d Allowable thrust load Allowable thrust load (clamp lever) Permissible radial load Allowable radial load (clamp lever)
SCK1015C 10 mm 5100 N 1900 N 25.2 N·m 9.7 N·m
SCK1015S 10 mm 2500 N 900 N 15.2 N·m 6.2 N·m
SCK1215C 12 mm 4800 N 1700 N 30.2 N·m 9.7 N·m
SCK1215S 12 mm 2900 N 800 N 19.1 N·m 7.2 N·m
SCK1515C 15 mm 4400 N 1900 N 37.5 N·m 10.8 N·m
SCK1515S 15 mm 2500 N 780 N 22.7 N·m 9.1 N·m
SCK1615C 16 mm 4300 N 1800 N 33.1 N·m 13.1 N·m
SCK1615S 16 mm 2400 N 950 N 26.8 N·m 10.0 N·m
SCK2015C 20 mm 7000 N 2300 N 60.6 N·m 16.2 N·m
SCK2015S 20 mm 2900 N 1100 N 30.0 N·m 11.0 N·m
SCK2515C 25 mm 5100 N 2000 N 60.2 N·m 15.4 N·m
SCK2515S 25 mm 2600 N 1020 N 39.1 N·m 14.3 N·m
SCK3015C 30 mm 5400 N 1800 N 97.2 N·m 22.3 N·m
SCK3015S 30 mm 2300 N 870 N 44.8 N·m 21.2 N·m
SCK3520C 35 mm 5200 N 1370 N 97.3 N·m 26.7 N·m
SCK3520S This product 35 mm 4400 N 1200 N 96.3 N·m 27.8 N·m
SCK4020C 40 mm 5200 N 1780 N 135.1 N·m 27.1 N·m
SCK4020S 40 mm 4000 N 1300 N 143.2 N·m 40.9 N·m
SCK5020C 50 mm 5500 N 1320 N 135.1 N·m 35.0 N·m
SCK5020S 50 mm 3400 N 1100 N 142.3 N·m 44.7 N·m

How to choose Set collar

Points to check when selecting, with the values for this product (SCK3520S).

  1. 1. Select a bore matching the shaft diameter

    This product: Inner diameter d 35 mm

    Select the bore d to match the applicable shaft diameter. Listed products cover a range of φ5 to 110. Because the combination of shaft tolerance and collar bore tolerance affects clamping force and ease of fitting, check the bore tolerance as well as the shaft diameter.

  2. 2. Confirm the required axial holding force

    This product: Allowable thrust load 4400 N

    The allowable thrust load is the axial load that can be held without slipping axially, and listed products range from 2300 to 149040 N. Even with the same bore, values differ by type; for example, at φ30 there are products rated at 5400 N and 2300 N. Select a model with sufficient margin over the axial load applied.

  3. 3. Also check rotational holding force

    This product: Permissible radial load 96.3 N·m

    The allowable radial load is the torque that can be held without slipping in the rotational direction, and listed products range from 3.6 to 449.5 N·m. In applications where torque or rotational force acts on the collar, confirm that this value exceeds the operating conditions.

  4. 4. Choose the clamping method based on how often it is adjusted

    For positions that change frequently, the lever type is convenient because no tools are required, but its holding force is lower than with bolt tightening. The listed lever-tightened thrust load is 780 to 2300 N. If the shaft must not be damaged, select the clamp or wedge type.

  5. 5. Tighten to the recommended torque

    The holding forces in the catalog are values obtained when tightened to the recommended tightening torque. Listed products range from 0.9 to 267.2 N·m, and the value varies greatly with bolt size. Using a torque wrench to observe the specified value helps prevent loosening and damage to the body.

  6. 6. Select material and surface treatment suited to the environment

    S45C offers high strength and is protected against rust by black oxide or electroless nickel plating. For humid environments or areas with washdown, SUS304 is chosen, and for weight reduction, aluminum alloys such as A2017 are selected. However, holding force varies with material, so check it together with the load values.

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

About Set collar and all products

Features

  • Two types: normal (hex socket head bolt) and clamp lever

FAQ

Q. What is the bore diameter of the SCK3520S set collar in mm?
A. The bore diameter d is 35 mm. It is a wedge-clamp type set collar (S type) with bore diameter φ35.
Q. What are the allowable loads of the normal type and clamp lever type of the SCK3520S?
A. The normal type (hex socket head bolt) has an allowable thrust load of 4400 N and an allowable radial load of 96.3 N·m. The clamp lever type has an allowable thrust load of 1200 N and an allowable radial load of 27.8 N·m.
Q. What tightening method types are available for the SCK3520S?
A. Two types are available: normal (hex socket head bolt) and clamp lever.

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

Source documents

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