There are numerous coupling solutions on the market, Universal Joints, Beam couplings, bellows coupling, L Jaw type and Elastomeric couplings.
The origins of couplings goes back to the middle ages, the first demonstrated coupling product was by Robert Hooke in 1683, the Hooke joint as it was known has today become the widely used universal joint. This makes the universal joint the oldest coupling on the market today, it is manufactured by thousands of companies around the world, but the design flaws of the universal joint are the same in every one of them.
All claim they are the best but the technology is the same across the different manufacturers. Each have their advantages in different applications and even the advantage can also come with its own issues, for example a conveyor needs to be able to handle a certain amount of misalignment but universal joint with its increased maintenance of bearings and yokes may make the change uneconomical.
The cost of a mechanical coupling unit may be cheap but when adding the lifetime ROI can turn into being very expensive, constant greasing, constant replacing of worn bearings, constant replacement of urethane spiders in L jaw couplings. These component costs in addition to labor costs turns a cheap coupling into an mechanical coupling with a low ROI
Beam
Huco 723.51.4747
Six Beam Coupling, Clamp, Relieved, 51mm OD, 3/4in. x 3/4in. Bores
These general purpose, multi-beam couplings will readily accommodate any combination of axial motion and angular & parallel misalignment but should be used with caution if low bearing loads are desirable.
Couplings, Collars & Universal Joiners
KOP-FLEX 2274645 1090 HUBXQ Grid Coupling Hub 2274645 Grid Coupling Hub - 1090 Coupling Size Code, Carbon Steel Hub Material, Split Taper Bushed Bore, 0 to 2.6880 in Bore Diameter, 3.8800 in Length Through Bore
Lovejoy 1080 SPACER HUB S=3.469
Specifications
Description |
1080 SPACER HUB S=3.469W/HDW |
Type |
Grid Coupling |
Hub Material |
Alloy Steel |
Color |
Gray/Metallic |
Bore Type |
No Bore |
Weight |
21.01 lb |
Gear & Sleeve
Lovejoy 8E 2-Piece S-Flex Coupling Rubber Sleeve
Specifications
Description |
8E SLEEVE |
Coupling Size |
8E |
Sleeve Type |
E |
Type |
Sleeves for S-Flex Endurance Couplings |
Material |
EPDM |
Color |
Black |
Connection Type A x B |
Coupling Sleeve |
Weight |
1.15 lb |
Nominal Torque |
1475 in·lb166.66 N·m |
Lovejoy 8E 2-Piece S-Flex Coupling Rubber Sleeve
- Lovejoy offers flexible sleeves for S-Flex Endurance couplings in three designs: one-piece solid, one-piece split, and two-piece with retaining ring
- The one-piece split design provides solutions for applications with unique requirements where small shaft separations inhibit the installation of a one-piece solid sleeve
- Pre-molded teeth along the diameter of the sleeve engage with teeth of the coupling flanges
- No clamps or screws are needed to connect the flanges with the
Lovejoy BWC41 3/8x3/8 Bellows Coupling
Item | Motion Control Coupling |
---|---|
Bore Dia. | 3/8 x 3/8" |
Hub Dia. | 1.26" |
Length through Bore | 14 mm |
Material | Aluminum Hubs, Stainless Steel Bellows |
Max. Angular Misalignment | 1.2 Degrees |
Max. Axial Misalignment (In.) | +/-0.012 |
Max. Bore | 16.00 mm |
Max. Bore | 0.63 |
Max. Parallel Misalignment (In.) | 0.004 |
Max. RPM | 15,000 |
---|---|
Max. Temp. Range (F) | 212 |
Min. Bore | 6 mm |
Outside Dia. | 32 mm |
Overall Length | 41mm |
Screw Size | M4 mm |
Screw Type | Clamp Screw |
Size | BWC41 |
Style | Bellows Clamp |
Torque | 39.83 In.Lbs. |
Shipping Information
Height (cm) | 3.81 |
---|---|
Length (cm) | 7.62 |
Width (cm) | 3.81 |
HS Code | 8483908040 |
Country Of Origin | DE |
---|---|
Weight (kg) | 0.07 |
UPC | 685144773906 |
Couplings
Lovejoy UF-100 Dropout
Lovejoy 68514413938 Specifications
Description |
UF100 DROP OUT |
Hub Style |
Drop Out |
Coupling Type |
Flange-to-Flange |
Material |
Steel |
Color |
Gray/Metallic |
# of Mounting Screws Required |
3 |
Weight |
2.10 lb |
- Drop-out section for RRU-type Uniflex coupling and flange-to-flange flexible coupling
- Steel for strength and durability
- Accommodates angular and parallel misalignment
- Rotational speeds up to 30,000 rpm
- Set screw and key way for secure attachment to shaft
Couplings
Lovejoy UF-125 Dropout
Lovejoy 68514413942 Specifications
Description |
UF125 DROP OUT |
Hub Style |
Drop Out |
Coupling Type |
Flange-to-Flange |
Material |
Steel |
Color |
Gray/Metallic |
# of Mounting Screws Required |
3 |
Weight |
3.20 lb |
Ruland BS21-10-10-A Ruland bellows couplings are zero-backlash, torsionally stiff, and have a balanced design. They are made from black anodized aluminum hubs and stainless steel bellows to offer superior performance in precision servo applications. The stainless steel bellows are ideal for transmitting torque due to their thin walls allowing the coupling to easily flex while [...]
Ruland MDCD41-16-12-A
- Zero-backlash with anodized aluminum hubs for low inertia
- Balanced design reduces vibration at speeds up to 10,000 RPM
- Double disc style accommodates all forms of misalignment and is torsionally rigid making them well suited for precision positioning systems
- Hardware exceeds DIN 912 12.9 standards for maximum torque capabilities
- Ruland disc couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant
Specification: Item - Oldham Coupling Discs: Oldham Coupling Disc Fits Hub Outside Dia.: 1.313" / 33.3mm Material - Discs: Acetal Rated Torque: 70 in.-lb. Max. RPM: 4500Torsional Stiffness (Deg./In.-Lbs.): 0.009 Max. Angular Misalignment: 0.5 Degrees Max. Parallel Misalignment (In.): 0.008 Max. Axial Misalignment (In.): +/-.006 Max. Temp. Range (F): 150 Finish: Plain Disc Type: Acetal
Couplings