Let’s learn about Ringfeder Shrink Discs RfN 4181 with Dai Hong Phat, through the following article!
1. About Dai Hong Phat Corp – Ringfeder Germany
– Dai Hong Phat Corp is the official authorized representative of Ringfeder Germany in Vietnam (Ringfeder 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.
– Ringfeder Germany – the world’s leading brand in transmission and shock absorber solutions, with over 100 years of history of creation and innovation. Founded in 1922, with the first product “friction springs“, Ringfeder has become a global symbol of prestige for quality and reliability.
– Ringfeder Shrink Discs RfN 4181 products supplied by Dai Hong Phat are 100% genuine imported, with full CO/CQ, meeting international quality standards.
Certificate of Dai Hong Phat Corp is an authorized representative of Ringfeder Germany in Vietnam
See more: Other Ringfeder Shrink Discs
2. Characteristics of Ringfeder Shrink Discs RfN 4181
– Manufactured brand: Ringfeder/Germany.
– Inner diameter d: 220-800 mm.
– Outer diameter D: 370-1,230 mm.
– Total length L: 115-373 mm.
– Torque T: 160,000-8Mio Nm.
– The locking screws are tightened to ensure tight contact surfaces, preventing the ingress of dirt and moisture. It offers easy adjustment without requiring stop points, locking pins, or shaft grooves, allowing the hollow shaft to be positioned and locked at any point and angle on the shaft.
– The Ringfeder RfN 4181 shrink disc is a method for achieving proper clamping, featuring a two-part design consisting of a tightening ring with tapered holes and an inner conical ring. It is an expanded and functional version of the RfN 4161.
– The Ringfeder RfN 4181 is arranged around the center of gravity to provide concentric connection capability and suitable balance for high-speed applications. Traditional shrink disc devices require complex calculations, close machining tolerances, and good surface finishes, and they can also be difficult to install and remove.
View more product: Ringfeder Shrink Discs RfN 4073
| FOR ANY INQUIRIES OR QUOTATION REQUESTS, PLEASE CONTACT: SALES DEPARTMENT HOTLINE: +84906 955 057 – EMAIL: INFO@DHP-CORP.COM.VN |
3. Applications of Ringfeder Shrink Discs RfN 4181
Ringfeder Shrink Discs RfN 4181 reduces surface tensile forces in the connected components. This shrink disc device is primarily used in cases of extremely thin-walled hollow shafts or hollow shafts with low yield limits, typically made of materials such as gray cast iron or aluminum, such as aluminum conveyor pulleys or thin-walled levers.
4. Technical of Ringfeder Shrink Discs RfN 4181
| Catalogue Ringfeder RfN 4181 |
Installation Ringfeder RfN 4181 |
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| Shrink Discs dimensions [mm] | TA [Nm] |
T [Nm] |
Gw [kg] |
Tmax [mm] |
|||
| dxD | dw | d1 | L | ||||
| 220×370 | 160 | 270 | 115.8 | 570 | 160000 | 52.11 | 176000 |
| 170 | 182000 | 200200 | |||||
| 180 | 206000 | 226600 | |||||
| 240×405 | 170 | 296 | 121.4 | 570 | 190000 | 66.58 | 209000 |
| 180 | 215000 | 236500 | |||||
| 200 | 269000 | 295900 | |||||
| 260×430 | 190 | 318 | 128.4 | 580 | 247000 | 77.29 | 271700 |
| 200 | 277000 | 304700 | |||||
| 220 | 340000 | 374000 | |||||
| 280×460 | 210 | 340 | 146.4 | 570 | 282000 | 103.28 | 310200 |
| 220 | 313000 | 344300 | |||||
| 240 | 380000 | 418000 | |||||
| 300×485 | 220 | 360 | 154.1 | 980 | 385000 | 117.05 | 423500 |
| 230 | 425000 | 467500 | |||||
| 250 | 505000 | 555500 | |||||
| 320×520 | 240 | 380 | 156.6 | 980 | 444000 | 132.1 | 488400 |
| 250 | 488000 | 536800 | |||||
| 270 | 580000 | 638000 | |||||
| 340×570 | 250 | 402 | 167.5 | 980 | 564000 | 184.25 | 620400 |
| 260 | 612000 | 673200 | |||||
| 270 | 668000 | 734800 | |||||
| 360×590 | 270 | 424 | 182.7 | 980 | 658000 | 208.11 | 723800 |
| 280 | 712000 | 783200 | |||||
| 300 | 825000 | 907500 | |||||
| 380×640 | 290 | 444 | 185.1 | 1450 | 735000 | 247.5 | 808500 |
| 300 | 790000 | 869000 | |||||
| 310 | 845000 | 929500 | |||||
| 390×650 | 290 | 470 | 186.3 | 1900 | 903000 | 259.55 | 993300 |
| 300 | 970000 | 1067000 | |||||
| 320 | 1101000 | 1221000 | |||||
| 420×670 | 320 | 495 | 203.9 | 1450 | 969000 | 284.75 | 1065900 |
| 330 | 1038000 | 1141800 | |||||
| 350 | 1183000 | 1301300 | |||||
| 440×740 | 340 | 518 | 212.9 | 1450 | 1212000 | 398 | 1333200 |
| 350 | 1292000 | 1421200 | |||||
| 370 | 1460000 | 1606000 | |||||
| 480×790 | 380 | 552 | 243.7 | 1900 | 1815000 | 495.4 | 1996500 |
| 390 | 1920000 | 2112000 | |||||
| 410 | 2118000 | 2329800 | |||||
| 500×835 | 400 | 572 | 238.7 | 1900 | 2054000 | 626.3 | 2259400 |
| 410 | 2145000 | 2359500 | |||||
| 430 | 2377000 | 2614700 | |||||
| 530×850 | 430 | 608 | 260 | 1900 | 2397000 | 653.4 | 2636700 |
| 440 | 2520520 | 2772572 | |||||
| 460 | 2777417 | 3055159 | |||||
| 560×940 | 450 | 632 | 260 | 1900 | 2545000 | 748.7 | 2799500 |
| 460 | 2670006 | 2937006 | |||||
| 480 | 2929521 | 3222473 | |||||
| 590×960 | 470 | 654 | 380 | 1900 | 4012000 | 1173.9 | 4413200 |
| 480 | 4199188 | 4619106 | |||||
| 500 | 4587043 | 5045747 | |||||
| 620×970 | 500 | 720 | 304 | 1900 | 3402000 | 886.7 | 3742200 |
| 520 | 3708000 | 4078800 | |||||
| 540 | 4028000 | 4430800 | |||||
| 660×1040 | 530 | 728 | 418 | 3500 | 5758000 | 1448.2 | 6333800 |
| 550 | 6236900 | 6860590 | |||||
| 570 | 6735919 | 7409510 | |||||
| 700×1140 | 560 | 815 | 315 | 2700 | 4518700 | 1467.5 | 4970570 |
| 580 | 4880000 | 5368000 | |||||
| 600 | 5258000 | 5783800 | |||||
| 750×1150 | 600 | 900 | 340 | 3500 | 7669000 | 1847.5 | 8435900 |
| 620 | 8228643 | 9051507 | |||||
| 650 | 9106895 | 10017584 | |||||
| 800×1230 | 640 | 935 | 373 | 2700 | 6897960 | 1894.4 | 7587756 |
| 660 | 7378000 | 8115800 | |||||
| 700 | 8390500 | 9229550 | |||||
5. Why choose Dai Hong Phat Corp?
100% genuine products imported directly from Ringfeder Germany.
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/













