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Flexible Couplings - Bellows type, zero backlash, BK2 series, (Inches). (Part Numbers)

Flexible Couplings - Bellows type, zero backlash, BK2 series, (Inches).

Features
Easy to mount
Light weight and low moment of inertia
High torsional stiffness
Design
Two clamping hubs concentrically mounted to flexible bellows. Brief overloads of up to 1.5x the rated torque are acceptable.
Material
Bellows: high grade stainless steel
Hubs: see table
Advantage
Smooth stable running in highly dynamic and highly precise motion applications
Sizes 200 and above are available on special request.
Pilot bore parts can be found on the metric page.here.


Part Number
BK2/30/69/12.7/28.58
BK2/30/69/15.88/28.58
BK2/30/69/19.05/28.58
BK2/30/69/22.23/28.58
BK2/30/69/25.4/28.58
BK2/30/69/28.58/28.58
BK2/30/77/12.7/28.58
BK2/30/77/15.88/28.58
BK2/30/77/19.05/28.58
BK2/30/77/22.23/28.58
BK2/30/77/25.4/28.58
BK2/30/77/28.58/28.58
BK2/30/113/12.7/28.58
BK2/30/113/15.88/28.58
BK2/30/113/19.05/28.58
BK2/30/113/22.23/28.58
BK2/30/113/25.4/28.58
BK2/30/113/28.58/28.58
BK2/60/83/12.7/28.58
BK2/60/83/15.88/28.58
BK2/60/83/19.05/28.58
BK2/60/83/22.23/28.58
BK2/60/83/25.4/28.58
BK2/60/83/28.58/28.58
BK2/60/93/12.7/28.58
BK2/60/93/15.88/28.58
BK2/60/93/19.05/28.58
BK2/60/93/22.23/28.58
BK2/60/93/25.4/28.58
BK2/60/93/28.58/28.58
BK2/60/130/12.7/28.58
BK2/60/130/15.88/28.58
BK2/60/130/19.05/28.58
BK2/60/130/22.23/28.58
BK2/60/130/25.4/28.58
BK2/60/130/28.58/28.58
BK2/80/94/15.88/28.58
BK2/80/94/19.05/28.58
BK2/80/94/22.23/28.58
BK2/80/94/25.4/28.58
BK2/80/94/28.58/28.58
BK2/80/106/15.88/28.58
BK2/80/106/19.05/28.58
BK2/80/106/22.23/28.58
BK2/80/106/25.4/28.58
BK2/80/106/28.58/28.58
BK2/80/143/15.88/28.58
BK2/80/143/19.05/28.58
BK2/80/143/22.23/28.58
BK2/80/143/25.4/28.58
BK2/80/143/28.58/28.58
BK2/150/95/19.05/28.58
BK2/150/95/22.23/28.58
BK2/150/95/25.4/28.58
BK2/150/95/28.58/28.58
BK2/150/107/19.05/28.58
BK2/150/107/22.23/28.58
BK2/150/107/25.4/28.58
BK2/150/107/28.58/28.58
BK2/150/144/19.05/28.58
BK2/150/144/22.23/28.58
BK2/150/144/25.4/28.58
BK2/150/144/28.58/28.58
Part NumberMinimum order quantityVolume DiscountDays to Ship Allowable Torque Range
(N•m)
Outer Dia. A
(Ø)
Overall Length W
(mm)
Allowable Torque
(N•m)
Allowable Angular Misalignment
(deg)
Allowable Lateral Misalignment Range
(mm)
Allowable Lateral Misalignment
(mm)
Moment of Inertia
(kg・m2)
For Shaft Size D1
(inch)
For Shaft Size D2
(inch)
Fit Length (mm)
(mm)
Torsional Stiffness (N-m/rad)
(N-m/rad)
Tightening Torque of the Fastening Screw (N-m)
(N-m)
Size
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.000121/21 1/827390001530
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.000125/81 1/827390001530
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.000123/41 1/827390001530
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.000127/81 1/827390001530
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.0001211 1/827390001530
1 Piece(s)

21 Days

20.01~50.0055693010.02~0.20.20.000121 1/81 1/827390001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.000131/21 1/827280001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.000135/81 1/827280001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.000133/41 1/827280001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.000137/81 1/827280001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.0001311 1/827280001530
1 Piece(s)

21 Days

20.01~50.005577301.50.21~0.400.250.000131 1/81 1/827280001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.000141/21 1/827270001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.000145/81 1/827270001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.000143/41 1/827270001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.000147/81 1/827270001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.0001411 1/827270001530
1 Piece(s)

21 Days

20.01~50.00551133020.41~1.010.000141 1/81 1/827270001530
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.000321/21 1/831760004060
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.000325/81 1/831760004060
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.000323/41 1/831760004060
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.000327/81 1/831760004060
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.0003211 1/831760004060
1 Piece(s)

21 Days

50.01~100.0066836010.02~0.20.20.000321 1/81 1/831760004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.000351/21 1/831550004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.000355/81 1/831550004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.000353/41 1/831550004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.000357/81 1/831550004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.0003511 1/831550004060
1 Piece(s)

21 Days

50.01~100.006693601.50.21~0.400.250.000351 1/81 1/831550004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.00041/21 1/831540004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.00045/81 1/831540004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.00043/41 1/831540004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.00047/81 1/831540004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.000411 1/831540004060
1 Piece(s)

21 Days

50.01~100.00661306020.41~1.010.00041 1/81 1/831540004060
1 Piece(s)

21 Days

50.01~100.0081948010.02~0.20.20.00085/81 1/8361290005080
1 Piece(s)

21 Days

50.01~100.0081948010.02~0.20.20.00083/41 1/8361290005080
1 Piece(s)

21 Days

50.01~100.0081948010.02~0.20.20.00087/81 1/8361290005080
1 Piece(s)

21 Days

50.01~100.0081948010.02~0.20.20.000811 1/8361290005080
1 Piece(s)

21 Days

50.01~100.0081948010.02~0.20.20.00081 1/81 1/8361290005080
1 Piece(s)

21 Days

50.01~100.0081106801.50.21~0.400.250.000855/81 1/836850005080
1 Piece(s)

21 Days

50.01~100.0081106801.50.21~0.400.250.000853/41 1/836850005080
1 Piece(s)

21 Days

50.01~100.0081106801.50.21~0.400.250.000857/81 1/836850005080
1 Piece(s)

21 Days

50.01~100.0081106801.50.21~0.400.250.0008511 1/836850005080
1 Piece(s)

21 Days

50.01~100.0081106801.50.21~0.400.250.000851 1/81 1/836850005080
1 Piece(s)

21 Days

50.01~100.00811438020.41~1.010.00095/81 1/836840005080
1 Piece(s)

21 Days

50.01~100.00811438020.41~1.010.00093/41 1/836840005080
1 Piece(s)

21 Days

50.01~100.00811438020.41~1.010.00097/81 1/836840005080
1 Piece(s)

21 Days

50.01~100.00811438020.41~1.010.000911 1/836840005080
1 Piece(s)

21 Days

50.01~100.00811438020.41~1.010.00091 1/81 1/836840005080
1 Piece(s)

21 Days

100~less than 500819515010.02~0.20.20.000193/41 1/83617500070150
1 Piece(s)

21 Days

100~less than 500819515010.02~0.20.20.000197/81 1/83617500070150
1 Piece(s)

21 Days

100~less than 500819515010.02~0.20.20.0001911 1/83617500070150
1 Piece(s)

21 Days

100~less than 500819515010.02~0.20.20.000191 1/81 1/83617500070150
1 Piece(s)

21 Days

100~less than 500811071501.50.21~0.400.250.00023/41 1/83611000070150
1 Piece(s)

21 Days

100~less than 500811071501.50.21~0.400.250.00027/81 1/83611000070150
1 Piece(s)

21 Days

100~less than 500811071501.50.21~0.400.250.000211 1/83611000070150
1 Piece(s)

21 Days

100~less than 500811071501.50.21~0.400.250.00021 1/81 1/83611000070150
1 Piece(s)

21 Days

100~less than 5008114415020.41~1.010.000213/41 1/8369700070150
1 Piece(s)

21 Days

100~less than 5008114415020.41~1.010.000217/81 1/8369700070150
1 Piece(s)

21 Days

100~less than 5008114415020.41~1.010.0002111 1/8369700070150
1 Piece(s)

21 Days

100~less than 5008114415020.41~1.010.000211 1/81 1/8369700070150

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Basic Information

Type Bellows Type Max. Rotational Speed Range(r/min) 4001~10000 Feature No Backlash / Low Moment of Inertia
Body Material Aluminum Max. Rotational Speed(r/min) 10000 Bellows Part Material Stainless Steel
Operating Temperature Range(℃) -30::100

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