Product Specifications:

Angular Misalignment
Axial Motion 0.03"
B1 Maximum Shaft Penetration 1.75"
B1 Min Shaft Penetration 0.875"
B2 Max Shaft Penetration 1.75"
B2 Min Shaft Penetration 0.875"
Balanced Design Yes
Bellows Attachment Method Epoxy
Bore (b1) 45 mm
Bore Tolerance -0" to +0.001"
Dynamic Torque Non-reversing 675 lbs.-in.
Dynamic Torque Reversing 337.5 lbs.-in.
Finish Specification Sulfuric Anodized Mil-A-8625 Type Ii, Class 2 And Astm B580 Type B Black Anodize
Forged Clamp Screw M8
Full Bearing Support Required Yes
Hex Wrench Size 6 mm
Hub Width (lh) 1 3/8"
Keyway (k1) 14 mm
Keyway Size(k2) 5/16"
Length (l) 3.808"
Length Tolerance - 0.03" to + 0.03"
Material Specification Hubs: 2024-T351 Aluminum Bar
Max. Speed 10000 RPM
Moment Of Inertia 2.68 lbs.-in.
Number Of Screws 2
Outer Diameter 3.125"
Parallel Misalignment 0.012"
Recommended Hex Key Metric Hex Keys
Recommended Shaft Tolerance -0.0005" to 0"
Screw Finish Black Oxide
Screw Material Alloy Steel
Seating Torque 39 N-m
Small Bore (b2) 1.375"
Static Torque 1350 lbs.-ft.
Temperature -40°F to 200°F
Torque Wrench TW:BT-4C-3/8-345
Torsional Stiffness 3500 lbs.-in./deg.
Zero-backlash Yes

Shipping Info:

Ship weight (kg) 0.76
Ship height (cm)7.94
Ship length (cm)9.67
Ship width (cm)7.94
Country of OriginUS

Product Variants

ProductModelTorsional StiffnessAxial MotionParallel MisalignmentAngular MisalignmentMoment Of InertiaDynamic Torque Non-reversingDynamic Torque ReversingMax. SpeedPrice
BCK16-1/2 -10MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.009 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€384.25
BCK16-1/2 -6MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.0067 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€162.95
BCK16-1/2 -11MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.009 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€162.95
BCK16-1/2 -12MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.0089 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€384.25
BCK16-12MM-5/16 -A2100 lbs.-in./deg.0.012"0.004"1.5°0.0067 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€162.95
BCK16-1/2 -7MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.0091 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€162.95
BCK16-3/8 -7MM-A2100 lbs.-in./deg.0.012"0.004"1.5°0.0093 lbs.-in.30 lbs.-in.15 lbs.-in.10000 RPM€184.28

Contact us

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RULAND MANUFACTURING BCK50-45MM-1 3/8 -A 45mm x 1 3/8 Inch Bellows Coupling with Keyways, High Stiffness, Aluminum, 3.125 Inch, OD 3.816 Inch Lg.
€372.79 /unit