Clamp Bellows Cplg, Bores 9mmx0.313", OD 1.313", L 1.688", Aluminum

  • Mfr # BC21-9MM-5/16"-A

  • Zoro # G3409615


product price:  $96.85
/ea
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Key Features

Bore Dia.
9 mm x 0.313 in
Max. RPM
10000 RPM
Outside Dia.
1.313 in (33.3 mm)
Overall Length
1.688 in (42.9 mm)
Torsional Stiffness (Deg./In.-Lbs.)
400 lb-in/Deg (45 Nm/Deg)
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Specifications

Product Information

MFR #
BC21-9MM-5/16"-A
Zoro #
G3409615
UPC #
634529233290
Country of Origin
United States

Dimensions

Bore Dia.
9 mm x 0.313 in
Outside Dia.
1.313 in (33.3 mm)
Overall Length
1.688 in (42.9 mm)
Screw Size
M3
Length
1.688 in (42.9 mm)
Fastening Dimensions
Metric

Details

Max. RPM
10000 RPM
Torsional Stiffness (Deg./In.-Lbs.)
400 lb-in/Deg (45 Nm/Deg)
Max. Parallel Misalignment (In.)
0.006 in (0.15 mm)
Max. Temp. Range (F)
-40°F to 200°F (-40°C to 93°C)
Material
Anodized Aluminum
Max. Angular Misalignment
1.5 deg
Style
Clamp
Weight
0.1578 lbs
Measurement Type
Inch/Metric
Dynamic Torque Non-Reversing
60 lb-in (6.80 Nm)
Recommended Shaft Tolerance
+0.000 mm / -0.013 mm
Axial Motion
0.016 in (0.40 mm)
Number of Screws
2 ea
Screw Seating Torque
2.1 Nm
B2 Shaft Penetration
0.804 in
B1 Shaft Penetration
20.4 mm
Bore Tolerance
+0.001 in / -0.000 in (+0.03 mm / -0.00 mm)
Dynamic Torque Reversing
30 lb-in (3.40 Nm)
Static Torque
120 lb-in (13.6 Nm)
Screw Material
Alloy Steel
Screw Finish
Black Oxide

Description

Ruland standard length bellows couplings are a high torque zero-backlash coupling commonly found in responsive systems on semiconductor, solar, test and measurement, and printing equipment. This clamp type bellows coupling consists of two anodized aluminum hubs and a stainless steel bellows creating a lightweight low inertia coupling. It has 9mm x 0.313" bores, 1.313" (33.3mm) OD, and 1.688" (42.9mm) length. This coupling has a four convolution bellows for higher torque and torsional stiffness capabilities than equivalent couplings with more convolutions. The bellows are able to flex while remaining rigid under torsional loads allowing for all types of misalignment to be accommodated. This bellows coupling has a balanced design for reduced vibration at high speeds of up to 10,000 RPM. Hardware is metric and tests beyond DIN 912 12.9 standards. It is RoHS and REACH compliant.

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