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BK5 | Metal Bellows Coupling

Tapered Press-Fit Connection

The BK5 coupling is designed so that one side has a single radial clamping screw (ISO 4762) and one side includes a backlash-free clamping hub along with a tapered press-fit
 device.
Any imbalance of the clamping hub is compensated with balancing bores located on the inside of the hub. It has a wide operating temperature range (-30 to 100 degrees Celsius) and it is electrically and thermally insulated. This is an absolutely backlash-free solution due to the frictional clamp
 connection and axial pretensioning of the tapered
 press-fit segments. These couplings have an infinite life and are maintenance free if the technical ratings are not exceeded.
The bellows are made of highly flexible, high-grade stain-
less steel, while the clamping hubs up to series 80 are aluminum and 150 and up are steel. The tapered segment is glass-fiber reinforced plastic, molded onto the aluminum hub face. R+W's BK5 is rated for speeds up to 10,000 rpm and there are finely balanced versions available for even higher speed requirements. Brief overloads up to 1.5 times the value specified are acceptable.

METAL BELLOWS COUPLING WITH TAPERED
PRESS-FIT CONNECTION

15-1500 NM

BK5 Diagram

BK5 Series Variants

*See above picture for reference

ItemTorque(Nm)Length (mm)I.D. D1 (mm)I.D. D2O.D. (mm)MomentInertiaWeight (kg)TorsionStiffnessLateral(mm)Angular(deg)LateralSpringStiff(N/mm)Fastening screwTorque (Screw)Distance CenterLinesDistanceMount Length (mm)Mount Length (mm)PreLoadAxial Rec Force (N)Axial(mm)
BK5-151560 | 678-288-22490,07 | 0,080,1 | 0,110 | 80,15 | 0,21|1,5475 | 137M58176,522280,2-1,020 | 120,5 | 1

BK5-303071 | 7910-3010-25550,14 | 0,150,3 | 0,320 | 140,2 | 0,251 | 1,5900 | 270M615197,527330,5-1,050 | 300,5 | 1

BK5-606085 | 9512-3512-32660,23 | 0,260,4 | 0,438 | 280,2 | 0,251 | 1,51200 | 420M840239,531390,5-1,570 | 450,5 | 1

BK5-808094 | 10614-4214-38810,65 | 0,670,9 | 0,965 | 430,2 | 0,251 | 1,5920 | 290M1050271136430,5-1,548 | 321 | 2

BK5-15015095 | 10714-4214-38812,2 | 2,41,8 | 1,888 | 550,2 | 0,251 | 1,51550 | 435M1070271136430,5-1,582 | 521 | 2

BK5-300300114 | 12824-6024-581107,4 | 7,94 | 4225 | 1750,25 | 0,31 | 1,53750 | 1050M12130391343520,5-1,5157 | 1061,5 | 2

BK5-500500136 | 14935-6035-6012413,7 | 14,46,5 | 6,7255 | 2450,3 | 0,351 | 1,52500 | 840M162004116,551611,0-2,0140 | 962,5 | 3,5

BK5-80080015040-7540-6213321,594000,351,520002x M162502x 481845741,0-2,52003

BK5-1500150017650-8050-7515751,415,36500,351,536002x M204702x 5522,555940,50-1,506502



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