Let’s learn about Rathi Rigid Couplings RR with Dai Hong Phat, through the following article!
1. About Dai Hong Phat Corp – Rathi India
– Dai Hong Phat Corp is the official authorized representative of Rathi India in Vietnam (Rathi Vietnam), Laos, Cambodia, Philippines and Bangladesh. We provide genuine transmission shaft coupling solutions that meet international standards, helping to optimize the performance and durability of machinery systems.
– Established in 1993 in Pune, India, under Rathi Group. The company has achieved ISO 9001 certification and specializes in manufacturing transmission couplings. With a global distribution system and strict quality control processes, Rathi quickly became an internationally prestigious brand.
– In 2024, Rathi officially merged into Ringfeder.
– Rathi Rigid Couplings RR supplied by Dai Hong Phat are 100% genuine imports, with full CO/CQ, meeting international quality standards.
2. Characteristics of Rathi-Ringfeder Rigid Couplings RR
– Manufacturer brand: Rathi-Ringfeder/India.
– The Rathi Rigid coupling RR is a robust shaft coupling designed to provide precise torque transmission between perfectly aligned shafts. With its simple construction and high torsional stiffness, it is widely used in industrial drive systems where reliability and accuracy are critical.
Key features Rathi Rigid coupling RR:
+ High torsional stiffness design ensures efficient torque transmission without elastic deformation.
+ Backlash-free operation provides precise and stable power transmission between connected shafts.
+ Robust and durable construction suitable for heavy industrial applications.
+ Simple mechanical design allows easy installation and maintenance.
+ Precisely machined components ensure high concentricity and stable shaft alignment.
+ Designed for applications where shafts are accurately aligned.
+ Capable of transmitting high torque in demanding operating conditions.
+ Power capacity up to 750 kW at 100 rpm depending on coupling size.
+ Maximum bore diameter up to 230 mm, suitable for large industrial shafts.
+ Ideal for heavy-duty drive systems requiring rigid shaft connection.
| FOR ANY INQUIRIES OR QUOTATION REQUESTS, PLEASE CONTACT: SALES DEPARTMENT HOTLINE: +84 906 955 057 – EMAIL: INFO@DHP-CORP.COM.VN |
3. Applications of Rathi-Ringfeder Rigid Couplings RR
– The Rathi Rigid coupling RR is widely used in industrial drive systems that require rigid shaft connection and accurate torque transmission between two aligned shafts.
Typical applications
+ Motor to gearbox connections in industrial drive systems.
+ Pumps, compressors and industrial fans requiring stable torque transmission.
+ Conveyor systems and bulk material handling equipment.
+ Heavy machinery used in steel plants, cement plants and mining industries.
+ Mixing equipment, crushers and other heavy industrial machines.
+ Industrial machines that require precise shaft alignment and backlash-free power transmission.
+ Power transmission systems where high torsional rigidity and reliability are required.
4. Technical specifications of Rathi Rigid Couplings RR
| Catalogue Rathi-Ringfeder Rigid Couplings RR |
Installation Rathi-Ringfeder Rigid Couplings RR |

| Coupling Type | Size | kW @100 RPM | Torque (Nm) | Max Speed (RPM) | Dimenssion (mm) | Weight (kg) | ||||||
| ØA | ØB | L1 | TL1 | L2 | TL2 | RR | RRT | |||||
| RR | 20 | 1.06 | 101 | 6500 | 89 | 35 | 33 | 66 | – | – | 1.6 | – |
| RR/RRT | 30 | 2.30 | 220 | 5470 | 127 | 51 | 41 | 82 | 23 | 46 | 3.2 | 2.8 |
| 38 | 4.80 | 458 | 5260 | 132 | 64 | 48 | 96 | 23 | 46 | 4.1 | 3.6 | |
| 42 | 6.40 | 611 | 4750 | 146 | 70 | 56 | 112 | 38.1 | 76.2 | 5.6 | 5 | |
| 48 | 9.63 | 920 | 4050 | 171 | 81 | 61 | 122 | 38 | 76 | 9.3 | 8.3 | |
| 58 | 16.90 | 1614 | 3600 | 193 | 97 | 68 | 136 | 47 | 94 | 12 | 10.7 | |
| 65 | 29.90 | 2855 | 3220 | 216 | 117 | 76 | 152 | 63.5 | 127 | 18 | 16 | |
| 75 | 36.50 | 3485 | 2730 | 254 | 127 | 88 | 176 | 68 | 136 | 32 | 30 | |
| 85 | 53.40 | 5099 | 2480 | 279 | 147 | 100 | 200 | 76 | 152 | 44 | 39.3 | |
| 105 | 100.0 | 9549 | 2100 | 330 | 180 | 117 | 234 | 89 | 178 | 69 | 61 | |
| 120 | 149.0 | 14228 | 1880 | 370 | 206 | 132 | 264 | 102 | 204 | 109 | 97 | |
| 135 | 213.0 | 20340 | 1660 | 419 | 230 | 147 | 294 | 114.3 | 228.6 | 145 | 129 | |
| 150 | 292.0 | 27884 | 1520 | 457 | 256 | 165 | 330 | 127 | 254 | 186 | 166 | |
| RR | 170 | 470.0 | 44882 | 1300 | 533 | 292 | 188 | 376 | – | – | 350 | – |
| 190 | 575.0 | 54908 | 1170 | 597 | 330 | 211 | 422 | – | – | 475 | – | |
| 215 | 750.0 | 71620 | 1050 | 660 | 368 | 237 | 474 | – | – | 640 | – | |
5. Why choose Dai Hong Phat Corp?
– 100% genuine products imported directly from Rathi-Ringfeder India.
– Protect customers from counterfeit goods and always provide full CO/CQ documents.
– Goods in stock, fast delivery nationwide 24/7.
– Free technical consultation and support for drawings, catalogs.
– Refined processing workshop to meet individual requirements.
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– Hotline: +84906.955.057 | – Email: info@dhp-corp.com.vn
– Website: https://en.daihongphat.asia/ – https://khopnoitruc.com/ – https://ringfeder.com.vn/















