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Standard V-Pulley

Standard V-Pulley
  • On Sale Till 31/03/2025

"Shaft hole, keyway and push screw machining standardized."
[Features]
· Japan's first standard inch size product.
· Consistent production from casting to machining and surface treatment.
· Cell production method allows the production of many kinds of products in low volume, with short lead times.
· Imbalance mass allowance on outer circumference is 0.2% of pulley mass or 3 g, whichever is larger.
· Same accuracy as the balance prescribed in JIS B 1854-1987, "General use V-pulley".* M-type pulleys are exempt.
[Applications]
· Fans, etc.

(i)Caution

  • Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
    There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

PDF

Japanese Only

Part Number

Configured Part Number is shown.

Can Be Used For Blowers, Etc.

STD - A - 1 external appearance

STD - A - 1 external appearance

10X dimensional drawing

10X dimensional drawing

11U dimensional drawing

11U dimensional drawing

20X dimensional drawing

20X dimensional drawing

21U dimensional drawing

21U dimensional drawing

23U

23U

Product standard

Product standard, balance Imbalance mass allowance on the outer circumference is 0.2% or 3 g of the pulley mass, whichever is larger. This is the same accuracy stipulated by JIS B 1854-1987 "General Purpose V Pulleys". Excludes M type pulleys.

Product standard

Balance

Imbalance mass allowance on the outer circumference is 0.2% or 3 g of the pulley mass, whichever is larger. This is the same accuracy stipulated by JIS B 1854-1987 "General Purpose V Pulleys". Excludes M type pulleys.

Groove dimensions

Groove ShapeOuter Diameter
de
(Inches)
α ± 0.5
(°)
L0w1hef ± 1
M3 Or Less348.09.659-8.5
Over 3, And 3 1/2 Or Less369.75
Over 3 1/2389.86
A4 Or Less349.211.9512.516 ± 0.410.0
Over 4, And 5 Or Less3612.12
Over 53812.30
B6 1/2 Or Less3412.515.861520 ± 0.412.0
Over 6 1/2, And 8 Or Less3616.07
Over 83816.29

 

Unit: mm

 

Groove dimensions

Outer Diameter
de
(Inches)
Outer Circumference Vibration ToleranceRim Side Vibration ToleranceDiameter Tolerance
5 Or Less0.20.2±0.6
Over 5, And 6 1/2 Or Less0.250.25±0.8
Over 6 1/2, And 9 Or Less0.30.3±0.8
Over 9, And 12 Or Less0.350.35±0.8
Over 12, And 16 Or Less0.40.4±1.2
Over 16, And 24 Or Less0.50.5±1.2

 

Unit: mm

 

Part Number
21/2-A-3
21/2-A-3-[19-21/1]-[BCN,​BKN,​BKS,​BKT,​BKW,​BNN,​BNS,​BNT,​BNW]-[F6,​F8,​F,​G6,​G8,​G,​H6,​H8,​H]
21/2-A-3-[19-21/1]-[BCN,​BKN,​BKS,​BKT,​BKW,​BNN,​BNS,​BNT,​BNW]-[F6,​F8,​F,​G6,​G8,​G,​H6,​H8,​H][N,​NS1,​NS2,​NS3,​NSF,​Q,​QS1,​QS2,​QS3,​QSF]
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSGroove shape Number of grooves
(piece)
Type Shape
(mm)
Additional Work

322,146 IDR

1 Piece(s) 13 Day(s) or more 10A311U63.5No

-

1 Piece(s) 10 Day(s) or more 10A311U63.5Available

-

1 Piece(s) 10 Day(s) or more 10A311U63.5Available

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Tech Support

Factory Automation, Electronics, Tools, & MRO (Maintenance, Repair and Operations)
Tel:021-8990-4102 / FAX:021-8990-5803
8:30am - 5:30pm (Monday - Friday)