2 Grooves BK Sheave

group name: BK series V-Belt Sheave

Min Order: 1 piece

brand name: CTS-ChinaTransmissionS

model: BK-2 Sheave

Nearest port for product export: Shanghai, Ningbo, Tianjing, Guangzhou

Delivery clauses under the trade mode: FOB, CFR, CIF, EXW

Acceptable payment methods: T/T, L/C, D/P D/A, MoneyGram, PayPal, Westem Union, Cash

update time: Sun, 28 Jun 2026 04:22:39 GMT

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Paramtents

Material Cast Iron
Belt Type B Section / 5L V-belts
Groove Quantity 2 Grooves
Pilot Bore/ QD Bushed Black Phosphate/ Rust Protection
Bore Type Pilot Bore/ Finished Bore
Balance Dynamically Balanced

Packging & Delivery

Min Order1 piece

Briefing

High-strength cast iron BK-2 sheave for compact, high-speed industrial power transmission.

Detailed

About 2 Groove BK Sheave

A BK-2 Sheave is a double-groove classical V-belt sheave designed for use with B-section belts. Compared with BK-1 sheaves, the dual groove structure allows higher horsepower transmission and improved belt stability for industrial equipment operating under heavier load conditions.

BK-2 sheaves are commonly used in compressors, conveyors, agricultural machinery, and industrial processing systems where reliable multi-belt transmission is required.

The wider B-section belt profile provides improved torque transmission and better durability compared with smaller A-section belt systems.

For more information or to request a quote on our BK-2 Sheave, please don't hesitate to contact us.

BK-2 Sheave Dimension

CTS can supply a complete range of BK-2 sheave sizes for different transmission requirements.

BK-2 Series Sheave Solid Web and Arm/Spoke Type

Part Number	Diameter			Type	Stock Finished Bores Includes Keyway and Setscrew									F	E	L Thru Bore	Weight Ib (Approx.)
Part Number	OD	Datum A(4L)Belts	Pitch 3L Belts	Type	Stock Finished Bores Includes Keyway and Setscrew									F	E	L Thru Bore	Weight Ib (Approx.)
2BK25	2.5	1.9	2.3	A	0.5	0.625	0.75	0.875						1.75	0.4688	1.9688	1.3
2BK26	2.6	2	2.4	A		0.625		0.875	1	1.125				1.75	0.4688	1.9688	1.5
2BK27	2.7	2.1	2.5	A	0.5	0.625	0.75	0.875	1					1.75	0.4688	1.9688	1.6
2BK28	2.95	2.2	2.6	A	0.5	0.625	0.75	0.875	1	1.125				1.75	0.4688	1.9688	1.9
2BK30	3.15	2.4	2.8	A	0.5	0.625	0.75	0.875	1	1.125				1.75	0.4688	1.9688	2.3
2BK32	3.35	2.6	3	A		0.625		0.875	1	1.125				1.75	0.4688	1.9688	2.6
2BK34	3.55	2.8	3.2	A		0.625	0.75	0.875	1	1.125				1.75	0.4688	1.9688	2.8
2BK36	3.75	3	3.4	A			0.75	0.875	1	1.125		1.375		1.75	0.4688	1.9688	3.3
2BK40	3.95	3.2	3.6	B		0.625	0.75	0.875	1	1.125				1.75	0.4688	1.4688	3.3
2BK45	4.25	3.5	3.9	B					1	1.125		1.375		1.75	0.4688	1.4688	3.3
2BK47	4.45	3.7	4.1	B				0.875	1	1.125		1.375		1.75	0.4688	1.4688	3.7
2BK50	4.75	4	4.4	B			0.75		1	1.125		1.375		1.75	0.4688	1.4688	4.1
2BK52	4.95	4.2	4.6	B				0.875	1	1.125		1.375		1.75	0.4688	1.4688	4.5
2BK55	5.25	4.5	4.9	B						1.125		1.375		1.75	0.4688	1.4688	4.5
2BK57	5.45	4.7	5.1	B					1	1.125		1.375		1.75	0.4688	1.4688	5.1
2BK60	5.75	5	5.4	B			0.75	0.875	1	1.125		1.375		1.75	0.4688	1.4688	4.9
2BK62	5.95	5.2	5.6	B					1	1.125		1.375		1.75	0.4688	1.4688	4.8
2BK65	6.25	5.5	5.9	B					1	1.125		1.375		1.75	0.4688	1.4688	5.0
2BK67	6.45	5.7	6.1	C					1	1.125		1.375		1.75	0.4688	1.4688	5.0
2BK70	6.75	6	6.4	C			0.75		1	1.125	1.1875	1.375	1.4375	1.75	0.3438	1.5938	6.6
2BK80	7.75	7	7.4	C			0.75		1	1.125	1.1875	1.375	1.4375	1.75	0.3438	1.5938	7.2
2BK90	8.75	8	8.4	C			0.75		1	1.125	1.1875	1.375	1.4375	1.75	0.3438	1.5938	8.4
2BK100	9.75	9	9.4	C			0.75		1		1.1875		1.4375	1.75	0.3438	1.5938	9.4
2BK110	10.75	10	10.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	10.4
2BK120	11.75	11	11.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	11.8
2BK130	12.75	12	12.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	14.9
2BK140	13.75	13	13.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	16.3
2BK160	15.75	15	15.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	18.0
2BK190	18.75	18	18.4	C					1		1.1875		1.4375	1.75	0.3438	1.5938	23.3

Additional sizes and customized dimensions are available according to customer requirements.

Bore & Mounting Options

CTS offers different bore configurations for various shaft installation systems.

Pilot Bore BK-2 Sheave

Suitable for customers requiring custom bore machining and keyway processing.

Finished Bore BK-2 Sheave

Supplied with finished bore and keyway for direct installation.