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ID Curved Jaw Flexible Coupling
High Torsional Rigidity, High Torque, High Accuracy, High Durability, Low Inertia Moment, Small Size
● Coupling assembled by pressing a polyurethane sleeve into hubs on both sides
● Can absorb vibration, parallel, angular misalignments and shaft end-play
● Resistance to oil and eletrical insulation
● Identical clockwise and anticlockwise rotational characteristics
● Can absorb vibration, parallel, angular misalignments and shaft end-play
● Resistance to oil and eletrical insulation
● Identical clockwise and anticlockwise rotational characteristics
Brand Name:
Price:
USD
17.8
-
40.8
EA
Payment Methods
Buyer Protection:
Free Exchange 
Features
| • Coupling assembled by pressing a polyurethane sleeve into hubs on both sides • Can absorb vibration, parallel, angular misalignments and shaft end-play • Resistance to oil and electrical insulation • Identical clockwise and anticlockwise rotational characteristics • Two different hardness sleeves are avaible • Setscrew type |  |
Ordering Information
 |  | |
| Example: LK20-20-6-6 LK20: Series NO, Material: Aluminum Alloy 20: Outside Diam: 20mm, Setscrew Type 6: d1 Bore: 6mm 6: d2 Bore: 6mm |
Dimensions
| Model | Φd1Φd2 Max.Bore | Φd | L | L1 | L2 | S | L3 | M | Wrench Torque(N.m) |
| LK20-20-□□-□□ | 10 | 20 | 30 | 10 | 8 | 1.0 | 5.0 | M4 | 2.5 |
| LK20-25-□□-□□ | 12 | 25 | 34 | 11 | 10 | 1.0 | 5.0 | M5 | 5 |
| LK20-30-□□-□□ | 16 | 30 | 35 | 11 | 10 | 1.5 | 5.0 | M5 | 5 |
| LK20-40S-□□-□□ | 24 | 40 | 55 | 19.5 | 12 | 2.0 | 10 | M6 | 8 |
| LK20-40-□□-□□ | 24 | 40 | 66 | 25 | 12 | 2.0 | 10 | M6 | 8 |
| LK20-55-□□-□□ | 28 | 55 | 78 | 30 | 14 | 2.0 | 10 | M6 | 8 |
| LK20-65-□□-□□ | 38 | 65 | 90 | 35 | 15 | 2.5 | 15 | M8 | 20 |
| LK20-80-□□-□□ | 45 | 80 | 114 | 45 | 18 | 3.0 | 15 | M8 | 20 |
| LK20-95-□□-□□ | 55 | 95 | 126 | 50 | 20 | 3.0 | 20 | M10 | 40 |
| LK20-105-□□-□□ | 60 | 105 | 140 | 56 | 21 | 3.5 | 20 | M12 | 75 |
Specifications
| Model | Rated Torque (N.m) | Max. Torque (N.m) | Max. Rotational (rpm) | Morment of Inertia (kg.m²) | Static Torsional Stiffness (N.m/rad) | Errors of Eccentricity (mm) | Errors of Angularity (°) | Errors of Shaft End-play (mm) | Mass(g) |
| LK20-20-□□-□□ | 2.8 | 5.6 | 17000 | 9.3×10^-7 | 55 | 0.02 | 1 | 0∼+0.60 | 20.5 |
| LK20-25-□□-□□ | 6 | 12 | 16000 | 2.56×10^-6 | 63 | 0.02 | 1 | 0∼+0.60 | 36 |
| LK20-30-□□-□□ | 6.5 | 13 | 15000 | 5.22×10^-6 | 72 | 0.02 | 1 | 0∼+0.60 | 50 |
| LK20-40S-□□-□□ | 32 | 64 | 13000 | 2.26×10^-5 | 500 | 0.02 | 1 | 0∼+0.80 | 155 |
| LK20-40-□□-□□ | 32 | 64 | 13000 | 2.74×10^-5 | 550 | 0.02 | 1 | 0∼+0.80 | 159 |
| LK20-55-□□-□□ | 46 | 92 | 10500 | 8.71×10^-5 | 1500 | 0.02 | 1 | 0∼+0.80 | 401 |
| LK20-65-□□-□□ | 109 | 218 | 8300 | 2.67×10^-4 | 2800 | 0.02 | 1 | 0∼+0.80 | 696 |
| LK20-80-□□-□□ | 135 | 270 | 7000 | 8.05×10^-4 | 3500 | 0.02 | 1 | 0∼+1.00 | 1189 |
| LK20-95-□□-□□ | 260 | 520 | 6000 | 1.73×10^-3 | 4600 | 0.02 | 1 | 0∼+1.00 | 1932 |
| LK20-105-□□-□□ | 430 | 860 | 5500 | 2.9×10^-3 | 5800 | 0.02 | 1 | 0∼+1.00 | 2597 |
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LK20-30-10-12.7-Y | $17.80 |
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2D Drawings
| Title | Type | Size（KB） | Download |
|---|---|---|---|
| 4332620000146.pdf | 41 | ||
| 4332620000145.pdf | 41 | ||
| 4332620000148.pdf | 41 | ||
| 4332620000202.pdf | 196 | ||
| 4332620000150.pdf | 41 | ||
| 4332620000151.pdf | 41 |
Delivery & Packaging
Ensure your ordered products are always safely packaged from easy click to fast delivery to your handsProfessional Product Label
Considering all possible harsh application environments, MOONS' specially designed labels for each product, which pass water-resistance test, durability rub test, high temperature resistance and corrosion resistance tests.Besides, our product labels are attached with QR code linking to product details, which is convenient for clients to view the detail product page with their mobile phones.
Note: This label design is suitable for products of stepper motor.
(Professional packing box and unique appearance design)
(Single item packed with EPE)
(Multi-products packed with another box)
Safely Packaging
In order to ensure your shipments withstand the long trip and arrive safely and intact, MOONS' specially designed Individual package to pass the drop test with its stable structure.Besides，the package is made from recyclable materials, providing you with professional safety delivery.
Whether just single item or multi-products the clients buy, all products are packed twice to avoid the damage further.
Shipping Visualization
For each case, products are carefully packed by experienced warehouse staff and the key processes are recorded by photos, which are then posted on our website, so that clients could clearly know the packing process and logistics status after placing order.
(Product in the box)
(Add the invoice)
(Label the commodity)
(The logistics waybill attached)
Fast Delivery
Fast Cross-Border DeliveryMOONS' chooses DHL as our main international express shipping partner. As the world's leading logistics specialist, DHL provides our customers with fast and professional inter- national door-to-door delivery service.
Estimated Delivery Time: e.g. China-USA major cities 3 business days.
Professional
Warehouse Management
