RX Rotary Union For water, air, and thermal oil service dvanced rotary unions for fluid and air service. Engineered reliability for demanding applications.
RX Rotary Union Overview of the RX Rotary Union... 8 to 2... 4 2 to... 6 4 to 5... 0 4 to 6 Tapered Roller earings... 2 Repair its...4 Quick Release Flange...6 Technical ata... 8 Installation Recommendations... 20 Other Rotary Unions... 22 ingle flow rotary union ual flow rotary union Quick elect hart Type edia ressure (ax.) Temperature (ax.) peed (R) Water Thermal Oil team ir R I F RX 200 05 220,500 8 to 2 2 to 4 to 6 RX- 200 77 50,500 RX-2 200 204 400,500 RX- 200 22 450,500 RX 200 05 220,000 RX- 200 77 50,000 RX-2 200 204 400,000 RX- 200 250 482,000 RX 0 50 49 00 750 RX- 0 50 60 20 750 RX-2 0 50 204 400 750 RX- 0 50 260 500 750 2 Recommended cceptable Not Recommended onsult adant ohnson for application recommendations and for high-temperature RX-, RX-2, and RX- configurations.
Overview Tapped vent holes recision ball bearings tainless steel springs tainless steel rotor Two-piece housing mooth flow elbow O-ring secondary seal ilicon carbide or carbon graphite seal ring Tungsten carbide counterseat Features u prings located outside the flow area u tainless steel rotor u Two-piece housing, on-machine seal replacement u O-rings fully captured in glands u alanced seal assembly u Full flow area u atched seal faces u earing isolation system available u Tungsten carbide counterseat enefits u Improved reliability, increased flow area u orrosion resistant u Reduced down-time and cost of maintenance u Robust design, no risk of o-ring slipping u Extended operating life u Low pressure drop u aterials selected for specific service u Increased bearing protection u dded toughness and shock resistance The RX rotary union connects stationary piping to a rotating device. The fluid is sealed by precision, micro-lapped seals that provide a uniform, full-flow design. The union is supported by two widely-spaced anti-friction bearings and is available with a bearing isolation system for added bearing protection. The RX union is capable of intermittent dry running and features a 00% pure-molded carbon graphite or silicon carbide seal and tungsten carbide counterseat.
8 to 2 tandard RX Ratings ressure: Temperature: peed, straight thread: peed, NT thread: edia: 200 psig ( bar) 220 F (05 ),500 R,500 R Water, ir onsult adant ohnson for RX-, RX-2, and RX- unions for applications up to 450 F (22 ). 2 F F H G ingle flow taper thread rotor ual flow straight thread rotor NT Rotor Thread ingle Flow art I ual Flow Fixed ipe ual Flow Rotating ipe F G H 2 NT NT Fixed ipe Rotating ipe O pprox. Weight 8 8 NT RH 2025 20400 8 NT LH 2050 20425 5 8-8 UNF RH 20225 204200 5 8-8 UNF LH 20250 204250 8 RH 20450 204525 8 LH 20460 204550 0.8 2.54.92 0.4.42 4.60 4.67 6.0 4 4 * 2 lb 0.8 2.54.92 0.62.42 4.60 4.67 6.0 4 4 * 2 lb 0 64 00 6 6 2 9 5 4 6 x * 0.9 g 2 NT RH 20625 20725 207250 2 NT LH 20650 20750 207260 0.50 2.54 4.0 0.5.42 4.60 4.79 6.0 8 8 0.75 0.7 lb 2 4-6 UNF RH 20625 20790 207400 4-6 UNF LH 20650 20792 207405 0.50 2.54 4.0 0.75.42 4.60 4.79 6.0 8 8 0.75 0.7 lb 2 RH 206425 207425 207725 2 LH 206450 207450 207750 64 02 9 6 2 22 5 8 8 9.98 9.9.4 g 4 NT RH 2025 2225 2200 4 NT LH 2050 2250 2225 0.68 2.90 4.40 0.56.7 5.25 5.40 6.82 2 4 0.500 0.498 5 lb 4-4 UN RH 280 2290 22205-4 UN LH 22000 2225 2220 0.68 2.90 4.40 0.75.7 5.25 5.40 6.82 2 4 0.500 0.498 5 lb 4 RH 22525 22240 22400 4 LH 22550 22250 22425 7 7 9 4 4 8 7 2 4 2.98 2.9 2. g * Fixed tube O.. imensions are for reference only and subject to change. 4
RX ingle and dual flow NT Rotor Thread ingle Flow art I ual Flow Fixed ipe ual Flow Rotating ipe F G H 2 NT NT Fixed ipe Rotating ipe O pprox. Weight NT RH 2625 27275 27400 NT LH 2650 27290 27425.00.58 5.4 0.66 2.7 6.47 6.54 8.40 2 8 0.625 0.62 8 lb 2-2 UNF RH 26225 2775 27725 2-2 UNF LH 26250 27200 27750.00.58 5.4.2 2.7 6.47 6.54 8.40 2 8 0.625 0.62 8 lb RH 2645 27250 27825 LH 2670 27260 27850 25 9 8 28 55 7 66 2 2 8 5.98 5.9.6 g 4 NT RH 22625 22700 227785 4 NT LH 22650 2270 227790.25.78 6.09 0.68 2.64 7.86 7.45 9.7 4 2 0.79 0.789 0 lb 4 4-2 UN RH 22625 227500 227775 4-2 UN LH 22650 22750 227780.25.78 6.09.9 2.64 7.86 7.45 9.7 4 2 0.79 0.789 0 lb 4 RH 226425 227625 227825 4 LH 226450 227650 227850 2 96 55 0 67 200 89 247 4 2 2.98 2.9 4.5 g 2 NT RH 2225 222225 222550 2 NT LH 2250 222250 222450.50 4.57 6.86 0.68 2.70 8. 8.6 0.54 4 4.000 0.998 6 lb 2 2-2 UN RH 22625 222500 222555 2-2 UN LH 22650 222525 222575.50 4.57 7.6.2 2.70 8.4 8.66 0.84 4 4.000 0.998 6 lb 2 RH 22825 222600 222725 2 LH 22850 222625 222750 8 6 82 28 68 24 220 276 4 4 25.98 25.9 7.2 g imensions are for reference only and subject to change. recision ball bearings tainless steel springs tainless steel rotor mooth flow elbow Two-piece housing O-ring secondary seal ilicon carbide or carbon graphite seal ring Tungsten carbide counterseat 5
2 to tandard RX Ratings ressure: Temperature: peed, flanged rotor: peed, threaded rotor: edia: 200 psig ( bar) 220 F (05 ),000 R 750 R Water, Thermal Oil onsult adant ohnson for RX-, RX-2, and RX- unions for applications up to 450 F (22 ). F F Taper thread rotor Q flange rotor NT Rotor art I F pprox. Weight 2 2 2 2 NT RH 240600.90 5.60 9.00 0.70.00 28 lb 2 NT LH 240625 2 - RH 240650 49 4 229 29* 280 g 2 - LH 240660 Q Flange 240675.90 5.60 9.40 2.60.40 28 lb 2 2 NT RH 245600 2 2 NT LH 245625 2.40 6.90 0.70 0.9.20 4 lb 2 2 - RH 245640 2 2 - LH 245645 6 74 27 8* 4 20 g Q Flange 24060 2.40 6.90 0.70 2.80.20 4 lb NT RH 2500 2.90 7.90 2.90.02 5.60 64 lb NT LH 2525 - RH 2550 74 200 27 45* 97 29 g - LH 2560 Q Flange 255 2.90 7.90 2.50.0 5.0 64 lb *Lock-up dimension for straight threads. imensions are for reference only and subject to change. 6
RX ingle flow N N E E 2 and 2 2 integral flange integral flange Rotor art I * E N 2 NT 9 O.. Flange 240690.90 8.2 5.60 9.0 6.8.0 4 x 2 2.60 9 lb 2 (50 lb ) 9 O.. Flange 240695.90 8.2 5.60 0.70 6.8.90 4 x 2.70 4 lb 2 2 NT 9 O.. Flange 245675 2.40 8.2 6.90 0.70 6.8 2.90 4 x 2.00 5 lb 2 2 (50 lb ) 9 O.. Flange 245685 2.40 8.2 6.90 2.20 6.8 5.60 4 x 2 4.0 56 lb NT 9 O.. Flange 2550 2.90 4.00 7.90 2.5 7.56 5.0 6 x 2.50 72 lb (50 lb ) 9 O.. Flange 2590 2.90 4.00 7.90.70 7.56 7.70 6 x 2 4.90 75 lb * For 2 and 2 2 sizes, the dimension is the I of the counterbore. ounterbore depth is 0.25 (6.4 mm). For size, the dimension is the O of the pilot. ilot length 0.0 (7.6 mm). imensions are for reference only and subject to change. pprox. Weight tainless steel springs eal chamber barrier recision ball bearings tainless steel rotor Two-piece housing Tungsten carbide counterseat tainless steel assembly plate ilicon carbide or carbon graphite seal ring 7
2 to tandard RX Ratings ressure: Temperature: peed, flanged rotor: peed, threaded rotor: edia: 200 psig ( bar) 220 F (05 ),000 R 750 R Water, Thermal Oil onsult adant ohnson for RX-, RX-2, and RX- unions for applications up to 450 F (22 ). F F H H G G Taper thread rotor Q flange rotor NT Rotor Fixed ipe art I Rotating ipe F G H NT NT Fixed ipe Rotating ipe O pprox. Weight 2 NT RH 24498 242704 2 NT LH 24499 242705.90 5.60 9.00 0.70.5 0.46.20.247.244 0 lb 4 2 - RH 242600 24280 2 - LH 24260 242820 49 4 229 29* 79 269 6.67.59 4 g 2 2 Q Flange 242250 242875.90 5.60 9.40 2.60.5 0.80.60.247.244 2 2 NT RH 245900 245978 2.40 6.90 0.70 0.9.90 2.0 5.80 2 2.877 2 2 NT LH 24590 245980.874 2 2 - RH 24590 24640 6 74 27 8* 7 07 402 2 2 47.68 2 2 - LH 245940 24645 47.60 Q Flange 245995 246205 2.40 6.90 0.66 2.80.9 2.90 5.80 2 2.877.874 0 lb 45 lb 20 g 45 lb NT RH 252090 25298 NT LH 252095 252920 2.90 7.90 2.90.02 4.90 4.70 9.0 2 2 2.247 2.244 7 lb 2 - RH 25220 25298 - LH 252220 25296 74 200 27 45* 45 7 49 2 2 57.07 57.00 2 g Q Flange 252275 252950 2.90 7.90 2.50.0 4.90 5.60 9.00 2 2 2.247 2.244 7 lb 8 *Lock-up dimension for straight threads. imensions are for reference only and subject to change.
RX ual flow N N H E H E G G 2 and 2 2 integral flange integral flange Rotor Fixed ipe art I Rotating ipe * E G H N NT Fixed ipe Rotating ipe O pprox. Weight 4 NT 9 O.. Flange 24520 242720.90 8.2 9.2 6.8.5 0..4 4 x 2.247.244 (50 lb ) 9 O.. Flange 242708 24278.90 8.2 8.70 6.8 4.80 0.75 5.80 4 x 2.247.244 2 NT 9 O.. Flange 2460 24625 2.40 8.2 0.40 6.8.90 2.40 5.60 4 x 2 2 2.877.874 2 (50 lb ) 9 O.. Flange 246800 246825 2.40 8.2 0.0 6.8 6.20 2.40 9.20 4 x 2 2 2.877.874 2 NT 9 O.. Flange 252675 252725 2.90 4.00 2.50 7.56 4.90 5.60 9.00 6 x 2 2 2 2.247 2.244 2 (50 lb ) 9 O.. Flange 25220 25240 2.90 4.00 2.00 7.56 6.80 4.7 22.20 6 x 2 2 2 2.247 2.244 2.60 40 lb 4.00 45 lb.00 57 lb 4.60 69 lb.50 79 lb 5.0 94 lb * For 2 and 2 2 sizes, the dimension is the I of the counterbore. ounterbore depth is 0.25 (6.4 mm). For size, the dimension is the O of the pilot. ilot length 0.0 (7.6 mm). imensions are for reference only and subject to change. Two-piece housing tainless steel springs eal chamber barrier recision ball bearings tainless steel rotor mooth flow elbow tainless steel assembly plate ilicon carbide or carbon graphite seal ring Tungsten carbide counterseat 9
4 to 5 tandard RX Ratings ressure: Temperature: peed: edia: 50 psig (0 bar) 00 F (50 ) 750 R Water, Thermal Oil 6 x /4 6 x /4 G E H E ingle flow threaded connection ual flow threaded connection Flow NT art I * E G H NT pprox. Weight ingle 4 255600 ual 2 2 257700 *ilot length 0.0 (7.6 mm). 4.00 6.4 4.75 9.00 9.06 6.62 54 lb 00 45 20 229 484 68 70 g 4.00 9.06.5 4.75 9.00 4.8 7. 20.88 2 2 2.750.00 45 lb 00 484 4 20 229 46 50 2.748 76 66 g imensions are for reference only and subject to change. 0
RX eep groove ball bearing support 6 x /4 6 x /4 G E H E ingle flow flanged connection ual flow flanged connection Flow (50 lb ) art I * E G H (50 lb ) pprox. Weight ingle 4 255700 ual 2 2 258250 ingle 5 260600 ual 26050 *ilot length 0.0 (7.6 mm). 4.00 6.4 4.75 9.00 20.88 6.50 64 lb 00 45 20 229 50 65 75 g 4.00 22.9.50 4.75 9.00 7.2 7.00 26.62 2 2 2.750 5.25 209 lb 00 582 4 20 229 8 4 677 2.748 95 g 5.00 9.0 6.29 8.86 22.97 7.6 264 lb 27 485 60 225 58 94 20 g 5.00 26.00 6.88 6.29 8.86 8.8 9.94 29.75 5.50 280 lb.24 27 66 428 60 225 22 507 756.22 40 27 g imensions are for reference only and subject to change. Two-piece housing tainless steel springs re-packaged bearing cartridge U bushing for rotating pipe mooth flow elbow arbon graphite seal ring icro-lapped carbide counterseat Integral flange
4 to 6 aximum RX Ratings ressure: Temperature: peed: edia: 50 psig (0 bar) 500 F (260 ) 750 R Water, Thermal Oil onsult adant ohnson for RX-, RX-2, and RX- unions for applications up to 450 F (22 ). 6 x /4 6 x /4 G E H E ingle flow threaded connection ual flow threaded connection Flow NT * E G H NT pprox. Weight 4.00 8.50 4.75 9.00 2.9 6.62 54 lb ingle 4 00 469 20 229 58 68 70 g ual 2 2 4.00 2.2 5.25 4.75 9.00 4.8 7. 22.94 2 2 2.750.00 45 lb 00 56 86 20 229 46 582 2.748 76 66 g *ilot length 0.0 (7.6 mm). imensions are for reference only and subject to change. 2
RX-, RX-2, RX- Tapered roller bearing support N N G E H E ingle flow flanged connection ual flow flanged connection Flow (50 lb ) * E G H N (50 lb ) pprox. Weight ingle 4 4.00 8.50 4.75 9.00 2.00 6 x 6.50 64 lb 4 00 469 20 229 584 65 75 g ual 2 4.00 25.00 5.62 4.75 9.00 7.2 7.00 28.75 2 6 x 4 2 2 2.750 5.25 209 lb 00 66 97 20 229 8 4 70 2.748 95 g ingle 5 5.00 9. 6.29 8.86 24. 6 x 7.6 264 lb 4 27 486 60 225 67 94 20 g ual 5.00 26.06 6.88 6.29 8.86 8.8 9.94 29.8 6 x 4.24 5.50 280 lb 27 662 428 60 225 22 507 757.22 40 27 g ingle 6 6.00 20.5 6.94 9.75 25.85 8 x 9.00 4 52 57 76 248 657 227 ual 4 6.00 0.4 9.60 6.94 9.75 9.00 22.86 4.92 8 x 4 4 4.2 7.00 52 77 498 76 248 229 58 887 4.9 78 * For 4 and 5 sizes, pilot length is 0.0 (7.6 mm). ilot length for 6 size is 0.56 (4.2 mm). imensions are for reference only and subject to change. Two-piece housing tainless steel springs re-packaged bearing cartridge mooth flow elbow Full-flow rotor ntimony impregnated bushing for rotating pipe arbon graphite or silicon carbide seal ring icro-lapped counterseat Tapered roller bearings
Repair its Type RX rotary unions feature a cartridge design that allows for application-specific configurations. For demanding applications with higher operating temperatures, rotational speed, or lower quality fluids, three cartridge options are available: RX-, RX-2, and RX-. RX RX- RX-2* RX-* eal Ring aterial arbon Graphite arbon Graphite ilicon arbide ilicon arbide ounterseat aterial Tungsten arbide Tungsten arbide ilicon arbide** ilicon arbide** ack-up Lip eal No Yes Yes Yes earings ( 8 ) eep Groove eep Groove eep Groove eep Groove earings (4 6 ) eep Groove Tapered Roller Tapered Roller Tapered Roller * RX-2 and RX- not recommended for dry running. ** Tungsten carbide counterseat available for 5 and 6 unions. Lip seal bearing protector eal ring ounterseat econdary seal Lip seal bearing protector Tapered roller bearing with high temperature grease 4
Rotary Union ize 8 2 4 4 2 2 2 2 4 5 artridge Temperature (ax F) eal Repair it art I earing Repair it RX 220 274005 27400 RX- 50 27405 274020 RX-2 400 274025 27400 RX- 482 27405 274040 RX 220 274005 27400 RX- 50 27405 274020 RX-2 400 274025 27400 RX- 482 27405 274040 RX 220 275500 275505 RX- 50 27550 27555 RX-2 400 275520 275525 RX- 482 27550 27555 RX 220 276500 276505 RX- 50 27650 27655 RX-2 400 276520 276525 RX- 482 27650 27655 RX 220 277500 277505 RX- 50 27750 277506 RX-2 400 277502 277507 RX- 482 27750 277508 RX 220 278200 278050 RX- 50 27820 278060 RX-2 400 278220 278070 RX- 482 27820 278080 RX 220 290900 290950 RX- 50 29000 29050 RX-2 400 2900 29060 RX- 482 29020 29070 RX 220 292000 292050 RX- 50 29200 292060 RX-2 400 292020 292070 RX- 482 29200 292080 RX 220 29000 29020 RX- 50 2900 2900 RX-2 400 29002 29040 RX- 482 29004 29050 RX 220 29400 294000 RX- 50 294020 294002 RX-2 400 294025 294005 RX- 500 29400 294045 RX 220 29500 295000 RX- 50 29505 295002 RX-2 400 295020 295004 RX- 500 29500 295006 6 RX-2 400 298005 298060 RX- 50 298000 298055 RX- 500 29800 298065 eal Repair it includes: u eal ring u ounterseat u O-rings u prings u Head gasket u O-ring lubricant earing Repair it includes: u eal repair kit u earings u Retaining rings for body and rotor 5
Quick Release Flange plit wedge etal Q-gasket Rotor Q-rotor flange ournal flange Rotary Union ize Water/ir *Flange et art I Thermal Oil No. of Q-flange Holes 2 6E00050 4 4 6E0050 6E00270 4 6E0050 6E0060 4 4 6E0250 6E0280 4 2 6E0600 6E060 4 2 6E0250 6E0258 4 2 2 6E02700 6E02704 4 6E000 6E002 5 * Flange set includes Q-rotor flange, split wedge, metal gasket, and retaining clip. Non-standard flange drilling available on request. Features u plit wedge construction for ease of installation u Q-Flange can be used for LH and RH rotation u ounting with multiple bolts enefits u Reduced installation and maintenance time u implified inventory u Easy installation with hand tools 6
F E H G Rotary Union ize E F G H pprox. Weight 2 0.62 0.25.75 2.62 0.50 0.8 0.82 2 lb 4 0.75 0. 4.50.00 0.56 0.44.02 lb 0.94 0. 5.00.50 0.56 0.56.28 lb 4.25 0.8 5.00.50 0.62 0.56.62 lb 2.50 0.8 5.50.94 0.75 0.56.88 4 lb 2.94 0.50 6.50 4.75 0.75 0.56 2. 6 lb 2 2 2.8 0.62 6.50 4.75 0.75 0.56 2.84 6 lb 2.88 0.75 8.00 6.75.9 0.69.44 lb imensions are for reference only and subject to change. 7
Technical ata Rotary union sizing Rotary unions that are used for liquid flow are typically sized so that the pressure drop is less than psi (0.20 bar) for open-loop systems and less than 6 psi (0.40 bar) for closed-loop systems. The pressure drop through a dual flow rotary union is higher than the pressure drop through a single flow union of the same size, because the internal flow area is less. Use the appropriate chart below for your configuration. Note that the pressure drop shown for dual flow unions is for the supply passage. The total pressure drop (flow in and flow out) would be approximately 2x this value. 4.0 RX Rotary Union (ingle Flow).5 /8 /2 /4 /4 /2 2 2 /2 4 5 6.0 ressure rop (psi) 2.5 2.0.5.0 0.5 0.0 0 00 000 Water Flow Rate (gpm) 4.0 RX Rotary Union (ual Flow).5 /8 /2 /4 /4 /2 2 2 /2 4 5 6.0 ressure rop (psi) 2.5 2.0.5.0 0.5 0.0 0.5 0 00 000 Water Flow Rate (gpm) 8
ommon pipe dimensions Weight NT threaded pipe Nominal chedule O (inch) Wall (inch) Internal rea (in 2 ) ipe (lb/ft) Water (lb/ft) NT Take-Up (inch) 40 0.675 0.09 0.9 0.57 0.08 0.4 8 80 0.675 0.26 0.4 0.74 0.06 0.4 40 0.840 0.09 0.0 0.85 0. 0.5 2 80 0.840 0.47 0.2.09 0.0 0.5 40.050 0. 0.5. 0.2 0.56 4 80.050 0.54 0.4.47 0.9 0.56 40.5 0. 0.86.68 0.7 0.66 80.5 0.79 0.72 2.7 0. 0.66 NT take-up 4 40.660 0.40.50 2.27 0.65 0.68 80.660 0.9.28.00 0.56 0.68 Torque values 2 40.900 0.45 2.04 2.72 0.88 0.68 80.900 0.200.77.6 0.77 0.68 2 40 2.75 0.54.6.65.45 0.70 80 2.75 0.28 2.95 5.02.28 0.70 Fastener ize Torque (Ft-lbs) olt tress t Recommended Torque (psi) 4 6 5 42,000 2 2 40 2.875 0.20 4.79 5.79 2.07 0.9 80 2.875 0.276 4.24 7.66.84 0.9 8 42,000 8 0 8 4,700 40.500 0.26 7.9 7.58.20.02 80.500 0.00 6.6 0.25 2.86.02 4 40 4.500 0.27 2.7 0.79 5.5 80 4.500 0.7.50 4.99 4.98 5 40 5.56 0.258 20.0 4.62 8.66 80 5.56 0.75 8.9 20.78 7.88 6 40 6.625 0.280 28.89 8.98 2.5 80 6.625 0.42 26.07 25.58.29 7 6 45,000 2 2 5,000 9 6 4 60 40,000 5 8 6 60 29,000 4 20 00 26,500 24 200 2,000 Ordering information If you have an existing adant ohnson rotary union with a product label affixed to the housing, the art I written on the label is all that is required to order a replacement union. For new applications or if no art I is available, the following data are requested:. Number of passages (single flow or dual flow) 2. Rotor type (threaded, Q-flange, or integral flange). Rotor thread (right- or left-hand and type) 4. upply pipe (none, fixed, or rotating) 5. ervice (water, thermal oil, air, or steam) 6. Fluid pressure art I Order T www.kadant.com 7. Fluid temperature 8. Rotational speed (rpm) 9. onnection sizes shown on drawing (,,, ) 9
Recommendations Flexible hose To ensure free movement of the rotary union and elimination of side loading, the proper installation, type, and length of flexible hose should be used. Recommended hose length, bend, and offset (inches) X ipe ize inimum Length (X) inimum end Radius aximum Offset 4 8 5.5 2.0 8 0 5.5 2.0 2 0 6.0.5 4 2 8.0.0 Threaded both ends X 5 9.0.5 4 8 0 2.0 2 8 2 2.0 2 2 5 2.0 2 2 22 4 2.5 24 7 2.5 Threaded one end, lap flange other end X 4 28 22.0 5 0 28 2.5 6 2.5 Fixed flange one end, lap flange other end Offset inimum bend radius is limited by hose size and material. ompound hose (recommended) Filtration It is important to follow the filtration requirements recommended by the machinery manufacturer. Type RX rotary unions do not require additional filtration other than what is recommended for the fluid circulation system (typically 40 60 micron). Guarantee Type RX rotary unions are tested prior to shipment and are warranted against manufacturing defects for 2 months. adant ohnson s global sales and service network stands behind its products and provides support to more than 50 countries worldwide. 20
Threaded supply pipe threaded supply pipe is used for dual flow installations and is connected to the rotary union elbow using NT threads. ee page 9 for the NT take-up dimension. The size of the supply pipe determines the flow rate for a particular union size. The larger the pipe size, the higher the potential flow rate for a given size union. To avoid excessive stress at the pipe thread, the supply pipe length should not be longer than 4x the overall length of the rotary union. Fixed tube supply pipe The fixed tube supply pipe is made of stainless steel tubing and is silver-soldered into the elbow of the rotary union. The lighter weight and thinner wall sections allow for higher flow rates and higher rotational speeds compared to alternative supply pipe designs. To avoid excessive stress at the tube-elbow interface, the supply pipe length should not be longer than 6x the overall length of the rotary union. Rotating supply pipe rotating supply pipe can be produced from tubing or iron pipe. The end of the pipe that is inserted into the rotary union elbow is machined to a specific tolerance to provide the proper fit and performance. It is recommended that the rotating supply pipe be supported inside the roll when attempting to use a supply pipe longer than 4x the length of the union. straight thread rotor (for example, or UN) is used to ensure concentricity. onnectors adant ohnson rotary unions are attached to roll journals using threaded, flanged, or quick-release nipples. Tapered threads Tapered threads with adapter flange traight threads Quick-release flange mounted to journal Integral flange 2
Other Rotary Unions t adant ohnson, our world revolves around designing and manufacturing rotary joints and precision unions to meet our customers needs. ased on more than 75 years of innovation, we produce thousands of different rotary union configurations for a variety of process industries. Our full line of standard rotating unions is used in a wide variety of applications including steam, water, thermal oil, coolant, hydraulic oil, air, and other media. If you do not see what you need, our rapid design product development group is ready to provide a custom design based on your specific application needs. Type X for steam and thermal oil ( 4 to ) The X rotary joint is designed for steam and thermal oil applications with a stationary supply pipe. Its two internal carbon-graphite bearings permit self-alignment and long operating life even on cylinders that are not concentric. The convex seal ring and optimized seal diameter provide extended seal life and reduced maintenance for the X joint. The X rotary joint line is available in sizes from 4 to and can be used in single or dual flow applications. The joint is rated up to 650 F (4 ), 00 psig (20 bar), and 550 R. Type EL for steam and thermal oil (2 to 2) The EL rotary joint is designed for use with steam and thermal oil service. The double-guide design provides internal support for the joint and maintains alignment even when the roll or cylinder is not concentric. The EL is available in sizes ranging from 2 to 2 and is rated up to 650 F (4 ), 00 psig (20 bar), and 200 R. 22
Type G for coolant, water, air, and hydraulic oil The G rotary union is a high performance, high precision union for coolant, water, air, and hydraulic oil applications. Type G unions are generally applied to spindles, gun drills, milling, and other machinery. The G union is designed for smooth-running at speeds up to 50,000 R and pressures up to,600 psig (250 bar) in sizes ranging from 4 (0) to 5 8 (6). Type for pneumatic, hydraulic, and water applications The rotary union is a custom-designed multi-passage union for pneumatic, hydraulic, and water applications. The precision ball bearings are lubricated for life and housing materials include stainless steel, aluminum, steel, or brass. tandard passage sizes are 8, 4, 8, 2, 4, and with other sizes available. unions are available with up to 2 passages and rated up to 225 F (07 ),,000 psig (207 bar), and 500 R. Type OT for water cooling The Over-The-haft (OT) rotary union is applied to various types of driven rolls that require cooling through the driven side of the roll. The OT is made of stainless steel and bronze components and features a Quad-eal o-ring design for reliable sealing performance. For high-speed applications, a mechanical seal design is available. The OT rotary union is rated up to 200 F (9 ) and 50 psig (0 bar). 2
Local ssistance On Worldwide asis any suppliers have made a commitment to the international marketplace. ut few have taken that commitment as far as adant ohnson. To assure product availability wherever it's needed, adant ohnson joints, syphons, and related equipment are manufactured in sia, Europe, North merica, and outh merica. ecause knowledgeable advice and prompt service are as important as the products, adant ohnson has factoryauthorized representatives in nearly 50 countries. o no matter where you are, adant ohnson products, service, and assistance are nearby. NUFTURING LOTION 805 Wood treet Three Rivers, I 4909 U tel: + 269 278 75 fax: + 269 279 5980 Nijverheidslaan 2-25 80 Weesp, The Netherlands tel: + 294 494200 fax: + 294 459 ia nhanguera, km 8,5-5/5 278-50, alinhos,, rasil tel: +55 9 849 8700 fax: +55 9 87 009 adant is a global supplier of high-value, critical components and engineered systems used in process industries worldwide. www.kadant.com ontact us: Wuxi National Hi-Tech Industrial evelopment Zone Wuxi ity, iangsu rovince, hina tel: +86 50 852228 fax: +86 50 852208 NT OHNON IN. 805 Wood treet Three Rivers, I 4909 U Tel: +-269-278-75 Fax: +-269-279-5980 Email: info@kadant.com RX Rotary Union-007 (U) 05/204 Replaces: RX-006a 204 adant Inc.