Hotline
+84906 955057
Dai Hong Phat
Shrink Discs RfN 4181
Key Features of Shrink Discs RfN 4181
The Ringfeder RfN 4181 is also known as "thiết bị bóp trục RfN 4181", has two-part heavy-duty shrink series with an additional guide mechanism for the inner ring.
- Designed for the transmission of maximum torques, suitable for securing all types of hubs onto shafts and axles.
- Replaces traditional shrink fits, keys, polygon connections, and splined shafts.
- Simplified manufacturing with only plain shaft and bore diameters required.
- Fully replaceable, working without positive locking.
- Easy mounting with standard screws and tools; no additional machining required; short assembly times, cost savings in series production.
- Low susceptibility to contamination; prevents ingress of dirt and moisture; easy adjustability without the need for stops, steps, key-ways, or splines.
Specifications include:
- Inner Diameter d: 220-800 mm
- Outer Diameter D: 370-1,230 mm
- Overall Length L: 115-373 mm
- Torque T: 160,000-8 Mio. Nm
Shrink Discs RfN 4181 product specifications
| RfN 7181 Catalogue | RfN 7181 Installation Instruction |
 | |
| Shrink Discs dimensions [mm] | TA | T | Gw | Tmax | |||
| d x D | dw | d1 | L | [Nm] | [Nm] | [kg] | [mm] |
| 220 x 370 | 160 | 270 | 115.8 | 570 | 160000 | 52.11 | 176000 |
| 170 | 182000 | 200200 | |||||
| 180 | 206000 | 226600 | |||||
| 240 x 405 | 170 | 296 | 121.4 | 570 | 190000 | 66.58 | 209000 |
| 180 | 215000 | 236500 | |||||
| 200 | 269000 | 295900 | |||||
| 260 x 430 | 190 | 318 | 128.4 | 580 | 247000 | 77.29 | 271700 |
| 200 | 277000 | 304700 | |||||
| 220 | 340000 | 374000 | |||||
| 280 x 460 | 210 | 340 | 146.4 | 570 | 282000 | 103.28 | 310200 |
| 220 | 313000 | 344300 | |||||
| 240 | 380000 | 418000 | |||||
| 300 x 485 | 220 | 360 | 154.1 | 980 | 385000 | 117.05 | 423500 |
| 230 | 425000 | 467500 | |||||
| 250 | 505000 | 555500 | |||||
| 320 x 520 | 240 | 380 | 156.6 | 980 | 444000 | 132.1 | 488400 |
| 250 | 488000 | 536800 | |||||
| 270 | 580000 | 638000 | |||||
| 340 x 570 | 250 | 402 | 167.5 | 980 | 564000 | 184.25 | 620400 |
| 260 | 612000 | 673200 | |||||
| 270 | 668000 | 734800 | |||||
| 360 x 590 | 270 | 424 | 182.7 | 980 | 658000 | 208.11 | 723800 |
| 280 | 712000 | 783200 | |||||
| 300 | 825000 | 907500 | |||||
| 380 x 640 | 290 | 444 | 185.1 | 1450 | 735000 | 247.5 | 808500 |
| 300 | 790000 | 869000 | |||||
| 310 | 845000 | 929500 | |||||
| 390 x 650 | 290 | 470 | 186.3 | 1900 | 903000 | 259.55 | 993300 |
| 300 | 970000 | 1067000 | |||||
| 320 | 1101000 | 1221000 | |||||
| 420 x 670 | 320 | 495 | 203.9 | 1450 | 969000 | 284.75 | 1065900 |
| 330 | 1038000 | 1141800 | |||||
| 350 | 1183000 | 1301300 | |||||
| 440 x 740 | 340 | 518 | 212.9 | 1450 | 1212000 | 398 | 1333200 |
| 350 | 1292000 | 1421200 | |||||
| 370 | 1460000 | 1606000 | |||||
| 480 x 790 | 380 | 552 | 243.7 | 1900 | 1815000 | 495.4 | 1996500 |
| 390 | 1920000 | 2112000 | |||||
| 410 | 2118000 | 2329800 | |||||
| 500 x 835 | 400 | 572 | 238.7 | 1900 | 2054000 | 626.3 | 2259400 |
| 410 | 2145000 | 2359500 | |||||
| 430 | 2377000 | 2614700 | |||||
| 530 x 850 | 430 | 608 | 260 | 1900 | 2397000 | 653.4 | 2636700 |
| 440 | 2520520 | 2772572 | |||||
| 460 | 2777417 | 3055159 | |||||
| 560 x 940 | 450 | 632 | 260 | 1900 | 2545000 | 748.7 | 2799500 |
| 460 | 2670006 | 2937006 | |||||
| 480 | 2929521 | 3222473 | |||||
| 590 x 960 | 470 | 654 | 380 | 1900 | 4012000 | 1173.9 | 4413200 |
| 480 | 4199188 | 4619106 | |||||
| 500 | 4587043 | 5045747 | |||||
| 620 x 970 | 500 | 720 | 304 | 1900 | 3402000 | 886.7 | 3742200 |
| 520 | 3708000 | 4078800 | |||||
| 540 | 4028000 | 4430800 | |||||
| 660 x 1040 | 530 | 728 | 418 | 3500 | 5758000 | 1448.2 | 6333800 |
| 550 | 6236900 | 6860590 | |||||
| 570 | 6735919 | 7409510 | |||||
| 700 x 1140 | 560 | 815 | 315 | 2700 | 4518700 | 1467.5 | 4970570 |
| 580 | 4880000 | 5368000 | |||||
| 600 | 5258000 | 5783800 | |||||
| 750 x 1150 | 600 | 900 | 340 | 3500 | 7669000 | 1847.5 | 8435900 |
| 620 | 8228643 | 9051507 | |||||
| 650 | 9106895 | 10017584 | |||||
| 800 x 1230 | 640 | 935 | 373 | 2700 | 6897960 | 1894.4 | 7587756 |
| 660 | 7378000 | 8115800 | |||||
| 700 | 8390500 | 9229550 | |||||
Why Choose Shrink Discs RfN 4181?
Shrink discs RfN 4181 offer a modern method for creating mechanical shrink fits without the complexities of traditional methods. They eliminate the need for complicated calculations, close machining tolerances, fine surface finishes, and the substantial effort required for mounting and removal, while providing superior fatigue strength under alternating torsional stress.
RfN 4181 are mainly used in cases where the wall thickness of the hollow shaft is extremely thin or the hollow shaft has a low yield limit due to the material being gray cast iron or aluminum, such as: aluminum conveyor pulleys or thin-walled levers.
Authorized Distributor for Ringfeder Germany in Vietnam
By choosing the Shrink Discs RfN 4181, you invest in a solution that combines precision, durability, and cost-efficiency. Whether for industrial equipment or mechanical systems, this product ensures optimal performance and reliability.
In Vietnam, Dai Hong Phat is the authorized distributor for Ringfeder Germany's locking assemblies.
---------------------------------------------------------------------------------------
Contact Dai Hong Phat Corp today to learn more!!
Website: https://ringfeder.com.vn/ - https://daihongphat.asia/
Hotline: 0906 955 057 | Zalo: +84906 955 057
Email: info@dhp-corp.com.vn
Facebook: https://www.facebook.com/khopnoitrucdaihongphat
Zalo
Messenger
Youtube
Instagram