Our online catalog is being updated! Please contact us for current pricing. Differentially Pumped Rotary Seals RNN Series Differentially Pumped Rotary Seals, RNN Series Description RNN Series Differentially Pumped Rotary Seal Differentially pumped rotary seals (RNNs) provide 360° of continuous rotary freedom through the vacuum wall of a UHV system. The RNN has two stages of differential pumping isolated by graphite-impregnated, expanded, Teflon® seals on special sealing surfaces. A preloaded ball bearing set accurately controls the rotating stage position. This allows the unit to be successfully used with manipulators and other precision positioning devices. RNNs are available with worm drive fine adjust option. This allows for easier and more accurate angle adjustment. RNNs are also available with anti-backlash stepping or synchronous motor drive. RNNs with up to 12" I.D. are listed. Larger I.D.s have been built with excellent performance. Please consult factory for special applications. Specifications Models with clear inside diameters of 1.53" to 10" standard (see table). Larger sizes on request. All units are bakeable to 150°C Stationary and rotation flanges, tapped Flange face-to-flange face distance approximately that of two ConFlat-type flanges of the corresponding size 2 stage differentially pumped Base pressures in 10-11 Torr range 0-360° scale with Vernier, standard Typical Performance Specifications for RNN-400 and larger models resolution <0.004° repeatability <0.008° backlash <0.035° Readability Specifications Standard scale: 1.0° Mechanical counter: 0.1° Microstepped motor drive required for maximum resolution Options Fine adjust worm drive Digital read-out on fine adjust 0.1° read-out, mechanical, nonresetable Anti-backlash stepping motor drive 0.018° per full step (0.0225°/full step on RNN-150/MS) With manual knob Custom pumpout tube lengths and crank shaft lengths on /FA units available Payloads The standard maximum payloads are indicated to the right. Larger loads may be handled under specific applications. Please consult the factory for custom applications. The center of gravity of the payload is within "X" of the polar axis of the unit, where X is equal to 10% of the RNN I.D. The center of gravity of the payload is within "Y" distance of the rotating flange on the horizontal mounted units, where Y is the flange I.D. The overall maximum size "A" of the payload outside vacuum is: Vertical operation: 7 x flange O.D. Horizontal operation: 5 x flange O.D. Inverted operation: 7 x flange O.D. Model No. Vertical Horizontal Inverted RNN-150 54 lbs. 30 lbs. 45 lbs. RNN-250 90 lbs. 38 lbs. 70 lbs. RNN-400 144 lbs. 66 lbs. 110 lbs. RNN-600 180 lbs. 84 lbs. 140 lbs. RNN-800 200 lbs. 91 lbs. 160 lbs. RNN-1000 370 lbs. 160 lbs. 280 lbs. RNN-1200 430 lbs. 200 lbs. 350 lbs. Ordering Information RNN (See Table 1) RNN-400/FA to RNN-1000/FA (See Table 2) RNN/MS Stepping or /MY Synchronous Motor Drive (See Table 3) Table 1. RNN-Differentially Pumped Rotary Seals (includes a removeable adjustment wrench) I.D. Flange O.D. A B C D E F G H Model No. Price 1.53 2.75 4.50 2.99 1.0 3.18 2.75 .49 .13 60° RNN-150 $2,295. 1.53 2.75/6* 6.00 2.99 1.34 3.33 2.75 .15 .13 45° RNN-150/6 $2,595. 2.53 4.5 5.75 3.64 1.36 3.58 4.50 .49 .03 45° RNN-250 $3,050. 2.53 4.5/6* 6.00 3.64 1.52 3.71 4.50 .33 .03 45° RNN-250/6 $3,370. 4.03 6 7.75 4.57 1.68 4.34 6.02 .37 .06 45° RNN-400 $3,550. 6.03 8 10.25 6.16 1.74 5.70 8.00 .42 .13 54° RNN-600 $5,900. 8.00 10 12.05 7.03 1.94 6.70 10.00 .42 .13 45° RNN-800 $8,625. 10.00 13.25 15.75 8.81 2.37 8.50 13.28 .29 .13 24° RNN-1000 Consult Factory 12.00 14 20.00 - 2.25 - - - - - RNN-1200 Consult Factory Dimensions in inches. * Signifies rotating/mounting flange sizes respectively Table 2. RNN/FA-Differentially Pumped Rotary Seals with Fine Adjust** I.D. Flange O.D. A B C D E F G H I Drive Ratio Model No. Price 1.53 2.75 5.13 3.38 1.00 4.95 2.75 .49 0.37 60° 3 80:1 RNN-150/FA $2,995. 1.53 2.75/6* 6.00 3.84 1.34 5.32 2.75 .15 0.37 45° 3 100:1 RNN-150/6/FA $3,295. 2.53 4.5 6.38 4.20 1.36 6.11 4.50 .49 0.41 45° 3 100:1 RNN-250/FA $3,850. 2.53 4.5/6* 6.38 4.20 1.52 6.11 4.50 .33 0.41 45° 3 100:1 RNN-250/6/FA $4,170. 4.03 6 8.50 8.25 1.68 9.28 6.02 .37 0.54 45° 4 100:1 RNN-400/FA $4,450. 6.03 8 10.25 8.50 1.74 9.93 8.00 .42 1.10 54° 5 100:1 RNN-600/FA $6,895. 8.00 10 12.75 9.56 1.94 11.50 10.00 .42 1.10 45° 5 100:1 RNN-800/FA $10,525. 10.00 13.25 17.00 11.86 2.37 17.25 13.28 .29 .91 24° 7 100:1 RNN-1000/FA Consult Factory 12.00 14 Consult Factory RNN-1200/FA Consult Factory Dimensions in inches. * Signifies rotating/mounting flange sizes respectively ** The fine adjust units utilize worm drive and are dynamic anti-backlash on RNN-400 and larger models. They come with large knobs and crank handles. Table 3. RNN/MS or /MY-Differentially Pumped Rotary Seals with Anti-Backlash /MS Stepping or /MY Synchronous Motor Drive*** I.D. Flange O.D. A B C D E F G H I Drive Ratio Model No. Price 1.53 2.75 5.13 10.00 1.00 9.97 2.75 .49 0.74 60° 3.39 80:1 RNN-150/MS or /MY $3,995. 1.53 2.75/6* 5.13 10.00 1.34 9.97 2.75 .15 0.74 45° 3.39 100:1 RNN-150/6/MS or /MY $4,295. 2.53 4.5 6.38 10.10 1.36 8.30 4.50 .49 0.41 45° 3.39 100:1 RNN-250/MS or /MY $4,750. 2.53 4.5/6* 6.38 10.10 1.52 8.30 4.50 .33 0.41 45° 3.39 100:1 RNN-250/6/MS or /MY $5,070. 4.03 6 8.50 9.77 1.68 11.69 6.02 .37 0.54 45° 3.39 100:1 RNN-400/MS or /MY $5,250. 6.03 8 10.20 10.13 1.74 11.69 8.00 .42 1.10 54° 3.39 100:1 RNN-600/MS or /MY $7,465. 8.00 10 12.75 11.39 1.94 11.69 10.00 .42 1.10 45° 3.39 100:1 RNN-800/MS or /MY $11,200. 10.00 13.25 Consult Factory RNN-1000/MS or /MY Consult Factory 12.00 14 Consult Factory RNN-1200/MS or /MY Consult Factory 18.00 24 Consult Factory RNN-1800/MS Consult Factory 24.00 34 Consult Factory RNN-2400/MS Consult Factory Dimensions in inches. *** The motor drive units utilize worm drive and are all dynamic anti-backlash with hand knobs at the rear of the motor. Options Mechanical Counter Model Number: /MC Price: $345 Add digital read-out to fine adjust or motor drive unit 0.1° read-out, mechanical, non-resetable Viewable from the side Solution to difficulty caused by equipment mounted to platform obstructing view of degree scale When /MC option is selected the Vernier scale in not included. Valve Manifold System Model Number: /MFD Price: $560 Allows first stage pump to evacuate second stage pump Includes: Two 1.33" O.D. flange nipples, modified BVV-025 bakeable valve Flexible metal plumbing Assembled on RNN platform Thermocouple Access Tubes Model Number: /TC Price: $75 Allows access to measure vacuum levels at each differentially pumped zone 2 l/s Appendage Ion Pump Assembly Model Number: /AIP-2/133/MP-2 Price: $515. Use with Valve Manifold System. Allows continuous pumping of RNN. Includes Alnico magnets. Requires Ion Pump Control Unit (below). Ion Pump Control Unit Model Number: PS-10 Price: $995 (115V model); $1,095 (230V model) Use with 2 l/s Appendage Ion Pump Assembly. Power input: 115 VAC, 60 Hz or 230 VAC, 50 Hz (specify with order) Power output: 5 kV DC Includes HV coax cable and power cord. Click for more information on the Ion Pump Control Unit.