Ruland BC21-8-6-A

B016APOUWM

Ruland BC21-8-6-A 2024 or 7075 Aluminum Hubs Bellows Coupling, Clamp Style, 0.500" x 0.375" Bores, 1.313" OD

Ruland BC21-8-6-A 2024 or 7075 Aluminum Hubs Bellows Coupling, Clamp Style, 0.500" x 0.375" Bores, 1.313" ODzoom

Attributes

Key Value
Angular Misalignment1.5?
Axial Motion0.016 in
B1 Max Shaft Penetration0.804 in
B2 Max Shaft Penetration0.804 in
Balanced DesignYes
Bellows Attachment Meth.Epoxy
Bore (B1)0.5000 in
Bore Dia.1/2 in x 3/8 in
Bore Tolerance+0.001 in / -0.000 in
CategoryHardware, Fasteners, Ac.
Clearance Dia. (In.)1.313 in
Clearance Dia. (mm)33.3
Country of OriginUSA
Country of Origin (subj.United States
Description1/2"X3/8" BELLOWS COUPL.
Digi-Key Part Number3188-BC21-8-6-A-ND
Dynamic Torque Non-Reve.60 lb-in
Dynamic Torque Reversing30 lb-in
FinishBlack Anodized
Finish SpecificationSulfuric Anodized MIL-A.
Forged Clamp ScrewM3
Full Bearing Support Re.Yes
Hex Wrench Size2.5 mm
Hub Width (LH)0.590 in
ItemMotion Control Coupling
Item - Motion Control C.Motion Control Coupling
Length (L)1.700 in
Length through Bore0.811 in
Length through Bore (In.0.811
Length through Bore (mm)20.5
Length Tolerance+/- 0.030 in
ManufacturerRuland Manufacturing
Manufacturer Product Nu.BC21-8-6-A
MaterialAluminum
Material - CouplingsAluminum
Material SpecificationHubs: 2024-T351 Aluminu.
Max. Angular Misalignme.1.5 Degrees
Max. Axial Misalignment.+/-0.016
Max. Bore (In.)0.5 in
Max. Parallel Misalignm.0.006 in
Max. RPM10,000 RPM
Max. Temp.200 Degrees F
Max. Temp. Range (F)200 Degrees
Maximum Speed10,000 RPM
MfrRuland Manufacturing
Min. Bore (In.)0.375 in
Moment of Inertia0.037102 lb-in
Note 1Stainless steel hubs ar.
Note 2Torque ratings are at m.
Note 3Performance ratings are.
Note 4Torque ratings for the .
Number of Screws2 ea
Outer Diameter (OD)1.313 in
Outside Dia.1.313 in
Outside Dia. (In.)1.313
Outside Dia. (mm)33.3
Overall Length1.623 in
Overall Length (In.)1.623
Overall Length (mm)41.00
PackageBag
Parallel Misalignment0.006 in
Product StatusActive
Rated Torque120 in-lb
Recommended Shaft Toler.+0.0000 in / -0.0005 in
Screw FinishBlack Oxide
Screw MaterialAlloy Steel
Screw SizeM3
Screw Size (mm)M3
Screw TypeCap Screw
Seating Torque2.1 Nm
Series-
Shaft Locking Type - Co.1 Piece Clamp
SizeBC21
Small Bore (B2)0.3750 in
Specifications1.313" (33.35mm) Outer .
Static Torque120 lb-in
StyleBellows Clamp
Tariff Code8483.60.8000
Temperature-40?F to 200?F (-40?C t.
Torque (In.-Lbs.)120
Torsional Stiffness400 lb-in/Deg
Torsional Stiffness (De.400
TypeBellows Coupling
UNSPC31163018
UPC634529062791
UPC Code63452906279
Weight (lbs)0.150700
Zero-Backlash?Yes

All Prices

Img Seller Supplier SKU Min Price MOQ In Stock Lead Time Brand Weight Preferred Tier
thumbzoomRulandBC21-8-6-A135.041In StockRuland0.1507135.04 @ 1
us.rs-online.com72181369151.441In StockRuland Manufacturing151.44 @ 1
thumbzoomZoroG8332572153.971In Stock15Ruland0.17153.97 @ 1
Grainger30VE97168.751In Stock15RULAND MANUFACTURING168.75 @ 1
thumbzoomsustainablesupply.comC1650939181.461In StockRuland Manufacturing0.17181.46 @ 1
motionindustries.com02336489184.711In StockRuland Manufacturing Co Inc184.71 @ 1
thumbzoomDigi-Key13607049199.721156Ruland Manufacturing199.72 @ 1
thumbzoomRaptor SuppliesAF9WEY220.79953351In StockRULAND MANUFACTURING220.7995335 @ 1
© 2025 · Data Alchemy · Version 60 · ts:1760052239
prev


As an Amazon Associate I earn from qualifying purchases.

1759674002.8327