Clamp Bellows Cplg, Bores 12mmx0.313", OD 1.313", L 1.688", Aluminum

  • Mfr # BC21-12MM-5/16"-A

  • Zoro # G3417376


product price:  $96.85
/ea
Free Shipping & Returns

Key Features

Bore Dia.
12 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)
Max. Parallel Misalignment (In.)
0.006 in (0.15 mm)
See all product information
Get a 10% off coupon
Free 30-day returns
Return Policy
Get 30 days to pay with Net 30
Apply Now
Unlock tax-exempt savings
Add Tax Exemption

Specifications

Product Information

MFR #
BC21-12MM-5/16"-A
Zoro #
G3417376
UPC #
634529233047
Country of Origin
United States

Dimensions

Bore Dia.
12 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
Max. Parallel Misalignment (In.)
0.006 in (0.15 mm)
Style
Clamp
Max. Angular Misalignment
1.5 deg
Material
Anodized Aluminum
Torsional Stiffness (Deg./In.-Lbs.)
400 lb-in/Deg (45 Nm/Deg)
Max. Temp. Range (F)
-40°F to 200°F (-40°C to 93°C)
Weight
0.1536 lbs
Recommended Shaft Tolerance
+0.000 mm / -0.013 mm
Screw Seating Torque
2.1 Nm
B2 Shaft Penetration
0.804 in
Static Torque
120 lb-in (13.6 Nm)
Measurement Type
Inch/Metric
Screw Finish
Black Oxide
Dynamic Torque Non-Reversing
60 lb-in (6.80 Nm)
Number of Screws
2 ea
Axial Motion
0.016 in (0.40 mm)
Dynamic Torque Reversing
30 lb-in (3.40 Nm)
Bore Tolerance
+0.001 in / -0.000 in (+0.03 mm / -0.00 mm)
Screw Material
Alloy Steel
B1 Shaft Penetration
20.4 mm

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 12mm 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.

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.