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Flexible Type Shaft (Solid Shaft / Pipe Shaft)

フレキシブルタイプ シャフト / Iwata Seisakusho Co., Ltd. (Official website) / Listed on page 1 of the document

Flexible shaft for sensor brackets. Provides section properties and self-weight load values for deflection calculation when used horizontally.

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

Flexible Type Shaft (Solid Shaft / Pipe Shaft) on page 1 of Iwata Seisakusho Co., Ltd. "センサブラケット 技術資料 シャフト&締付トルク"
Source: Iwata Seisakusho Co., Ltd.「センサブラケット 技術資料 シャフト&締付トルク」page 1
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Specifications

Solid shaft φ8 Unit weight per length 3.91×10-3 N/mm
Solid shaft φ8 Second moment of area 201.06 mm4
Solid shaft φ10 Unit weight per length 6.11×10-3 N/mm
Solid shaft φ10 Second moment of area 490.87 mm4
Solid shaft φ12 Unit weight per length 8.80×10-3 N/mm
Solid shaft φ12 Second moment of area 1017.88 mm4
Solid shaft φ14 Unit weight per length 11.98×10-3 N/mm
Solid shaft φ14 Second moment of area 1885.74 mm4
Solid shaft φ16 Unit weight per length 15.65×10-3 N/mm
Solid shaft φ16 Second moment of area 3216.99 mm4
Solid square shaft □10 Unit weight per length 7.79×10-3 N/mm
Solid square shaft □10 Second moment of area 833.33 mm4
Solid square shaft □12 Unit weight per length 11.20×10-3 N/mm
Solid square shaft □12 Second moment of area 1728.00 mm4
Pipe shaft φ8×1.0 Unit weight per length 1.72×10-3 N/mm
Pipe shaft φ8×1.0 Second moment of area 137.44 mm4
Pipe Shaft φ10×1.0 Weight per Unit Length 2.21×10-3 N/mm
Pipe Shaft φ10×1.0 Second Moment of Area 289.81 mm4
Pipe Shaft φ12×1.0 Weight per Unit Length 2.70×10-3 N/mm
Pipe Shaft φ12×1.0 Second Moment of Area 527.00 mm4
Pipe shaft φ14×1.0 Unit weight per length 3.18×10-3 N/mm
Pipe shaft φ14×1.0 Second moment of area 867.86 mm4
Pipe shaft φ16×1.5 Unit weight per length 5.32×10-3 N/mm
Pipe shaft φ16×1.5 Second moment of area 1815.01 mm4
Square pipe shaft □10×1.0 Unit weight per length 2.81×10-3 N/mm
Square pipe shaft □10×1.0 Second moment of area 492.00 mm4
Square pipe shaft □12×1.0 Unit weight per length 3.42×10-3 N/mm
Square pipe shaft □12×1.0 Second moment of area 894.67 mm4
Modulus of elasticity 206×10³ N/mm2
Allowable rotational torque φ8 with standard shaft 1.0～1.5 N・m
Allowable rotational torque φ8 with high-grip shaft 3.0 N・m
Allowable rotational torque φ10 with standard shaft 1.0～2.0 N・m
Allowable rotational torque φ10 with high-grip shaft 3.0～4.0 N・m
Allowable rotational torque φ12 with standard shaft 2.0～3.0 N・m
Allowable rotational torque φ12 with high-grip shaft 5.0～6.0 N・m
Tightening torque M4 2.0 or less N・m
Tightening torque M5 2.0 or less N・m
Tightening torque M6 2.5 or less N・m
Operating Temperature Range -25～+55 ℃

How to choose Pins & Shafts

Points to check when selecting, with the values for this product (Flexible Type Shaft (Solid Shaft / Pipe Shaft)).

  1. 1. Select the outer diameter to match the mating hole

    The outer diameter is selected to suit the hole diameter of the mating part or the bore of a bearing. Listed products range from extra-fine 0.1 mm diameters to about 10 mm. Fine diameters bend easily, so the balance with load and length should also be checked. Compare the nominal diameter and the actual permissible range together with the diameter tolerance.

  2. 2. Choose a diameter tolerance suited to the fit

    Tolerance symbols such as h7, g6 and m6 determine the range within which the outer diameter falls relative to the basic dimension. For press-fit fixing, choose a tighter interference fit such as m6; for sliding or rotation, choose a clearance fit such as g6 or h7. Combine these with the tolerance of the mating hole.

  3. 3. Determine the required overall length and whether long lengths are available

    Overall length is determined from the hole depth of the mounting area and the support span. Listed products range from 2 mm to 150 mm, and long lengths may be offered as a separate series. The longer the part, the more deflection and straightness effects tend to appear, so consider a larger diameter or additional support points.

  4. 4. Select a material suited to the operating environment

    Stainless steels such as SUS304 and SUS303 resist rust and suit humid or washed environments. SUS303 is a steel grade with improved machinability. Where wear or high load is a concern, select hardenable steels or products with higher hardness.

  5. 5. Check hardness and surface treatment of sliding areas

    Where the shaft rubs against a bearing or seal, surface hardness affects wear life. Some products have surfaces hardened by hard chrome plating or quenching, and repair sleeves for oil seal areas are available with hard chrome plating for high hardness. Also confirm whether the plating thickness is included in the stated dimensions.

  6. 6. Check whether the end shape allows easy insertion

    Chamfered or rounded ends make insertion into holes easier and help prevent damage to the mating bore. Parallel pins may be classified by end shape, such as Type A and Type B, so select according to the assembly method and whether press-fitting is required.

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

About Pins & Shafts and all products

Description

Reference material for calculating deflection of solid shafts and pipe shafts when used horizontally. Lists self-weight per unit length and second moment of area for round and square solid and pipe shapes, and presents formulas for deflection due to self-weight and deflection due to concentrated end load. Also lists permissible swivel torque, tightening torque, and operating temperature range.

Features

  • Deflection calculable for horizontal use
  • Supports round and square shafts
  • Operating temperature range -25 to +55 ℃

Applications

  • Sensor mounting
  • Sensor position adjustment

FAQ

Q. How can the deflection of the flexible type shaft be calculated when used horizontally?
A. Reference material is provided for calculating deflection of solid shafts and pipe shafts when used horizontally. Formulas for deflection due to self-weight and deflection due to concentrated end load are shown.
Q. What are the self-weight per unit length and second moment of area of the solid and pipe shafts of the flexible type shaft?
A. Solid shaft φ8 has a self-weight of 3.91×10-3 N/mm per unit length and a second moment of area of 201.06 mm4. Pipe shaft φ8×1.0 has a self-weight of 1.72×10-3 N/mm per unit length and a second moment of area of 137.44 mm4. Values are listed for each round and square solid and pipe shape.
Q. What are the permissible swivel torque and tightening torque of the flexible type shaft?
A. Permissible swivel torque is 1.0 to 1.5 N・m for φ8 with normal shaft and 3.0 N・m with high-grip shaft. For φ10, it is 1.0 to 2.0 N・m with normal shaft and 3.0 to 4.0 N・m with high-grip shaft. Tightening torque is 2.0 N・m or less for M4 and M5, and 2.5 N・m or less for M6.
Q. What are the operating temperature range and longitudinal modulus of elasticity of the flexible type shaft?
A. Operating temperature range is -25 to +55 ℃. Longitudinal modulus of elasticity is 206×10³ N/mm2.

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

Source documents

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