Model 7280 7/8" Diameter 10 Turn Wirewound Precision Potentiometer MODEL STYLES AVAILABLE 7281 1/8" Shaft, 1/4" Bushing 7283 1/8" Shaft, Servo 7284 6 mm shaft, 3/8" Bushing 7286 1/4" Shaft, 3/8" Bushing 7288 (for heavy side load applications) 1/4" Shaft, 3/8" Bushing ELECTRICAL1 Resistance Range 100 to 100K ohms Standard Resistance Tolerance 5% Minimum Practical Resistance Tolerance 1% Independent Linearity2 0.25% Minimum Practical Independent Linearity 0.15% (<300 ohms), 0.075% (300 ohms) Power Rating 2.0 Watts at 70C, derating to 0 at 125C Dielectric Strength 1,000 V rms Insulation Resistance 1,000 Megohms minimum Noise 100 ohms maximum Actual Electrical Travel 3600 +10 -0 (>100 ohms), 3600 +10 -5 (100 ohms) End Voltage maximum 0.25% of input voltage Tap Tolerance 3 MECHANICAL Total Mechanical Travel 3600 +15 -0 Number of Gangs 2 maximum Weight (single gang) 0.75 oz. nominal Backlash 1 maximum 7281, 7284, 7286, 7288 1 2 7283 Static Stop Strength maximum 48 oz.-in. 36 oz.-in. Panel Nut Tightening Torque maximum 25 lb.-in. n/a Shaft End Play maximum 0.010" 0.005" Shaft Runout maximum T.I.R. 0.003" 0.002" Pilot Diameter Runout maximum T.I.R. 0.004" 0.002" Lateral Runout 0.004" maximum T.I.R. 0.005" Shaft Radial Play maximum 0.003" 0.002" Start/Run Torque (per gang, ES option adds 0.5 oz.-in.) maximum 0.8 oz.-in. 0.6 oz.-in. Specifications subject to change without notice. Linearity is measured between 1% and 99% of input voltage. BI Technologies Corporation 4200 Bonita Place, Fullerton, CA 92835 USA Phone: 714 447 2345 February 19, 2015 Website: www.bitechnologies.com Model 7280 page 1 of 4 RoHS 2 Pb compliant Model 7280 ENVIRONMENTAL (MIL-PRF-12934) Operating Temperature Range -40C to +125C dynamic, -55C to +125C static Temperature Cycling 5 cycles, -55C to +125C, maximum 5% R Shock 6 ms Saw-tooth, 100 G's, 0.1 ms maximum discontinuity Vibration 15 G's, 10 to 2,000 Hz, maximum 5% R, 0.1 ms maximum discontinuity Moisture Resistance Five 24 hour cycles, maximum 3% R High Temperature Exposure 1,000 hours at 125C, maximum 5% R Rotational Load Life (1 lb side load for 7288) 1M shaft revolutions + 900 hours at 2.0 Watts & 70C, maximum 5% R Ingress Protection Rating (IP Code) IP50, IP66 available as option (feature code ES) ORDERING INFORMATION 7286 R 10K T2 L.25 xx Model Series Optional Feature Code (see table) Resistance Prefix Linearity Resistance Value Optional Non-standard Tolerance FEATURE CODES STANDARD RESISTANCE VALUES Center Tap CT Theoretical Resolution (% nominal) Linearity Tape LT Total Resistance (Ohms) Flatted Shaft FS 100 0.059 20 Slotted Shaft (standard on single cup 7286 & 7288 without RS feature) SS 200 0.037 20 Rear Shaft Extension (7281, 7286, 7288 single cup only) RS 500 0.030 20 1K 0.024 20 Shaft Lock (7286 & 7288 only) SL 2K 0.020 20 High Torque 2-6 oz.-in. (7286 & 7288 only) HT 5K 0.018 20 Additional Gang 2G 10K 0.017 20 Gold Plated Solder Lug Terminals (see optional terminal configuration) FT 20K 0.016 20 Seal (IP66) 7284, 7286, or 7288 only ES 50K 0.010 20 100K 0.008 20 When multiple Feature Codes are used the P/N shall be in the same sequence as listed in this table (top to bottom). Tempco of wire (ppm/C) CIRCUIT DIAGRAM (S) (CCW) BI Technologies Corporation 4200 Bonita Place, Fullerton, CA 92835 USA Phone: 714 447 2345 February 19, 2015 Website: www.bitechnologies.com Model 7280 page 2 of 4 (CW) Model 7280 MATCHING TURNS COUNTING DIALS 7281: RBJ, 2601, 2641 7286, 7288: RB, 2126, 2606, 2606S, 2607, 2607S, 2626, 2627, 2646, 2646S, 2647, 2647S OUTLINE DRAWINGS Dim. Models 7281, 7284, 7286, & 7288 Bushing Mount with Sleeve Bearing 7281 .688 .031 17.475 0.787 A +0.0000 .1248 -0.0003 B 1.125.031 28.580.79 .750.016 19.10.41 Slider CCW .281 C .125 Min. 3.18 7.137 D +0.000 -0.002 +0.000 -0.051 Dim. D Chamfer .016/0.41 Max. x 45 .312.016 7.930.41 Dia. Dia. +0.0000 .2362 -0.0005 +0.0000 6.0000 -0.0127 .406 10.312 +0.000 -0.002 .020 Thickness 3/8 - 32 UNEF Thread 75 Max. +0.0000 6.3500 -0.0127 .406 10.312 +0.000 -0.002 +0.000 -0.051 .875.016 22.20.41 Dia. .110 2.794 .060 .003 1.524 .076 .062 .003 1.524 .076 Use Special Feature Code "FT" to order. BI Technologies Corporation 4200 Bonita Place, Fullerton, CA 92835 USA Website: www.bitechnologies.com Model 7280 page 3 of 4 Dia. Dia. 3/8 - 32 UNEF Thread .625 15.9 R Max. Enlarged View B Phone: 714 447 2345 Dia. Dia. +0.000 -0.051 VIEW B .625 R MAX 15.9 R MAX February 19, 2015 +0.0000 .2500 -0.0005 Slot: .032.005/0.8130.127 Wide X .032+.010-.000/0.813+0.254-0.000 Deep (Not on Rear Shaft Models) Optional Terminal Configuration SLIDER .812 .031 20.625 0.787 Dim. C .062 +.000 -.010 1.58 +0.00 -0.25 40 7286 & 7288 .812 .031 20.625 0.787 1/4 - 32 UNEF Thread Dim. B CW .080.001 Dia. 2.030.03 +0.0000 3.1699 -0.0076 Mounting Surface Dim. A 7284 Dia. Model 7280 OUTLINE DRAWINGS (continued) Model 7283 Servo Mount with Ball Bearing Mounting Surface 1.250.031 31.750.79 .375.031 9.530.79 .875.016 22.20.41 .250 6.35 CCW Min. CW Slider .875.016 22.20.41 Housing Dia. .781 19.8 Dia. Max. .080.001 2.030.03 Dia. +.0000 -.0003 +0.0000 Dia. 3.1699 -0.0076 .1248 +.000 .625 -.001 +0.000 Dia. 15.875 -0.025 .057 1.45 Min. .062.005 1.580.13 .062.005 1.580.13 .625 R. Max. 15.9 105 Max. +.005 .875 -.010 Dia. +0.13 22.2 -0.25 Chamfer .016/0.406 Max. x 45 Clamp .922 Dia. Max. 23.4 Optional Terminal Configuration 40 105 MAX SLIDER .625 R MAX 15.9 R MAX VIEW B .020 Thickness BI Technologies Corporation 4200 Bonita Place, Fullerton, CA 92835 USA Phone: 714 447 2345 February 19, 2015 .110 2.794 .060 .003 1.524 .076 .062 .003 1.524 .076 Use Special Feature Code "FT" to order. Website: www.bitechnologies.com Model 7280 page 4 of 4 Clamp Ears Enlarged View B Dia.