JIS V-Pulley, B Type

Brand :

NABEYA BI-TECH

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.

Product Description

Full lineup of V-belt pulleys that conform to JIS B 1854.
[Features]
· 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.
· Shaft hole, keyway and push screw machining standardized.
· Extensive product range. 650 size. A: 146 size, B: 218 size, C: 212 size, D: 74 size.
· 369 size has been added into JIS standard 281 size separately. Fine standardization of small-diameter sizes used particularly in drive side mechanisms.
· Top-quality pulley with materials, machining precision and balance accuracy exceeding JIS standards (JISB1854-1987, "General use V-pulley").
[Applications]
· Fans, etc.

JIS V-pulley Specification

Consistent production from casting to machining and surface treatment. Additionally, NC machinery, automatic machinery, balancers, etc. have been developed specifically for pulley machining. Cell production allows the production of many kinds of products in low volume, with short lead times. Delivering convenience to customers.

Convenient additional machining service has been standardized.

Shaft hole, keyway, and set screw machining are available in standardized form.

Extensive product range. 650 size.

A: 146 size, B: 218 size, C: 212 size, D: 74 size. The 369 size has been added into JIS standard 281 size separately. Fine standardization of small-diameter sizes used frequently in drive side mechanisms.

High quality exceeding JIS standards.

Top quality pulley with materials, machining and balance accuracy exceeding JIS standards (JIS B1854 - 1987 "General Use V Pulleys." Imbalance tolerance on the outer circumference is 0.1% of the pulley mass.
Surface treatment, for improving corrosion resistance is a coating with a beautiful finish.

V-pulley external appearance

Product standard Product standard conforms to JIS B1854-1987 "General Purpose V Pulleys."

Groove Shape	Nominal Size d_m	α ± 0.5 (°)	l_o	w1	k		k_o	e^*1	f
A	100 Or Less	34	9.2	11.95	4.5	+0.2 0	8.0	15.0 ±0.4	10.0	±1
	Over 100, And 125 Or Less	36		12.12
	Over 125	38		12.30
B	160 Or Less	34	12.5	15.86	5.5	＋0.2 0	9.5	19.0 ± 0.4	12.5	±1
	Over 160, And 200 Or Less	36		16.07
	Over 200	38		16.29
C	250 Or Less	34	16.9	21.18	7.0	+0.3 0	12.0	25.5 ± 0.5	17.0	±1
	Over 250, And 315 Or Less	36		21.45
	Over 315	38		21.72
D	450 Or Less	36	24.6	30.77	9.5	+0.4 0	15.5	37.0 ±0.5	24.0	+2 -1
D	Over 450	38	24.6	31.14	9.5	+0.4 0	15.5	37.0 ±0.5	24.0	+2 -1

Groove dimensions (units: mm)
*1: e cumulative error of 0.8 mm or less.

Nominal Size dm	Outer Circumference Vibration Tolerance	Rim Side Vibration Tolerance	Diameter Tolerance
118 Or Less	0.15 (0.3)	0.15(0.3)	±0.4 (±0.6)
Between 125 And 160	0.15 (0.4)	0.15(0.4)	±0.6(±0.8)
Between 165 And 224	0.2 (0.4)	0.2(0.4)	±0.6(±0.8)
Between 236 And 300	0.25 (0.4)	0.25(0.4)	±0.6(±0.8)
Between 315 and 450	03 (0.6)	0.3 (0.6)	±0.9(±1.2)
Between 475 and 630	0.4(0.6)	0.4(0.6)	±0.9(±1.2)
Between 710 and 1,120	0.5 (0.8)	0.5 (0.8)	±1.2(±1.6)

Outer circumference / rim side vibration tolerance value and outer diameter tolerance value (units: mm)
*Parentheses enclose corresponding JIS B1854-1987 values

Balance

Imbalance mass allowance on the outer circumference is 0.1% or 1 g of the pulley mass, whichever is larger. At a circumferential speed of 15 m/s, this corresponds to G16 of the JIS B 0905 "Rotating Machines - Balance Quality of Rigid Rotors."

Material and finish

JIS V-pulley: FC200 or higher coating, NBK blue (main body)