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DJM Series Keyway Type Diaphragm Coupling | High-Torque 45# Steel Flexible Disc Coupling
Model Number
Check below, custom
- Phone : +86 13431039760
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- Email : ella@apexcoupling.com
Product Description
obust Power Transmission: DJM Series Keyway Diaphragm Couplings]
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The DJM Series is a high-performance, single or double diaphragm coupling designed for rigorous industrial environments. Utilizing a heavy-duty keyway connection and precision-fitted reamed hole bolts , this coupling provides a secure, zero-backlash link that excels in high-torque and high-impact applications.
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Core Product Advantages
Premium 45# Round Steel Construction: Crafted from high-density round steel to ensure maximum torsional stiffness, high torque capacity, and low rotational inertia.
H7 Precision Bore: Every unit is machined to strict H7 tolerance standards, ensuring exceptional concentricity and reducing mechanical vibration.
304 Stainless Steel Disc Packs: Features high-grade elastic stainless steel diaphragms (circular or square) that offer excellent rust resistance and infinite fatigue life when used within rated limits.
Superior Damping & Protection: The flexible disc structure absorbs shocks and dampens vibrations, effectively reducing additional bending moments on the connected shafts.
Extreme Environment Ready: Operates smoothly in harsh industrial settings. Compared to gear couplings, the DJM series is more cost-effective, noise-free, and requires no lubrication.
High Sensitivity & Reliable Link: The precision bolt fitment ensures zero-play transmission and instantaneous response, vital for synchronized industrial drives.
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Technical Specifications Table
| Attribute | Specification Details | Â |
| Model | DJM Series (Single/Double Diaphragm) | Â |
| Connection Type | Keyway / Keyed Joint | Â |
| Body Material | 45# Quality Steel (Anti-rust) | Â |
| Disc Material | 304 Stainless Steel | Â |
| Bore Accuracy | H7 Tolerance | Â |
| Torque Capacity | High Torque Industrial Grade | Â |
| Max Speed | Up to 10,000 r/min (Model Dependent) | Â |
| Fasteners | Grade 12.9 / Reamed Hole Bolts | Â |
DJM Diaphragm Coupling, Keyway Disc Coupling, 45# Steel Flexible Coupling, High Torque Industrial Coupling, Stainless Steel Membrane Coupling.
Table 1: DBN51 Series
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| DBN51 | 56 | 45 | 8-20 |
| DBN51 | 68 | 56 | 11-25 |
| DBN51 | 82 | 66 | 14-35 |
| DBN51 | 94 | 68 | 14-38 |
| DBN51 | 104 | 80 | 19-42 |
| DBN51 | 126 | 91 | 22-50 |
| DBN51 | 144 | 102 | 30-60 |
| DBN51 | 152 | 102 | 45-75 |
| DBN51 | 178 | 124 | 48-80 |
| DBN51 | 190 | 145 | 60-85 |
Table 2: DBL11 Series
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| DBL11 | 68 | 90 | 11-22 |
| DBL11 | 82 | 95 | 14-30 |
| DBL11 | 94 | 110 | 19-35 |
| DBL11 | 104 | 124 | 24-40 |
| DBL11 | 126 | 152 | 30-50 |
| DBL11 | 144 | 170 | 35-58 |
Table 3: DBL31 Series
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| DBL31 | 56 | 65 | 14-24 |
| DBL31 | 70 | 65 | 18-35 |
| DBL31 | 80 | 70 | 18-35 |
| DBL31 | 90 | 70 | 20-48 |
| DBL31 | 100 | 70 | 24-60 |
| DBL31 | 126 | 100 | 28-65 |
| DBL31 | 144 | 118 | 32-75 |
Table 4: DBL41 Series
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| DBL41 | 56 | 80 | 14-24 |
| DBL41 | 70 | 80 | 18-35 |
| DBL41 | 80 | 88 | 18-35 |
| DBL41 | 90 | 88 | 20-48 |
| DBL41 | 100 | 88 | 24-60 |
| DBL41 | 126 | 125 | 28-65 |
| DBL41 | 144 | 144 | 32-75 |
Product Show
DJM Diaphragm Coupling
