HEAD CHANGE REAMERS - BTA-R SERIES SINGLE TUBE SYSTEM - OUTER FOUR START THREAD Diameter 0.744 - 2.559 d2 d1 l1 L Dimension Tube Grade Designation D L l1 d1 d2 Part No. Diameter TB103 BTA-Rx.xxxSE4-17-xxx 0.744 - 0.756 2.24 1.74 0.531 0.610 BTSI017 0.669 BTA-Rx.xxxSE4-17-xxx 0.756 - 0.787 2.24 1.73 0.531 0.610 BTSI017 0.669 BTA-Rx.xxxSE4-18-xxx 0.788 - 0.823 2.56 1.94 0.551 0.630 BTSI018 0.709 BTA-Rx.xxxSE4-18-xxx 0.823 - 0.858 2.56 1.94 0.551 0.630 BTSI018 0.709 BTA-Rx.xxxSE4-20-xxx 0.859 - 0.902 2.56 2.08 0.630 0.709 BTSI020 0.787 BTA-Rx.xxxSE4-20-xxx 0.902 - 0.949 2.56 2.07 0.630 0.709 BTSI020 0.787 BTA-Rx.xxxSE4-22-xxx 0.949 - 0.992 2.56 2.13 0.689 0.768 BTSI022 0.866 BTA-Rx.xxxSE4-22-xxx 0.993 - 1.039 2.56 2.13 0.689 0.768 BTSI022 0.866 BTA-Rx.xxxSE4-24-xxx 1.040 - 1.083 2.56 2.12 0.748 0.827 BTSI024 0.945 BTA-Rx.xxxSE4-24-xxx 1.083 - 1.130 2.56 2.12 0.748 0.827 BTSI024 0.945 BTA-Rx.xxxSE4-26-xxx 1.130 - 1.173 2.76 2.34 0.827 0.925 BTSI026 1.024 BTA-Rx.xxxSE4-26-xxx 1.174 - 1.220 2.76 2.33 0.827 0.925 BTSI026 1.024 BTA-Rx.xxxSE4-28-xxx 1.221 - 1.264 2.76 2.34 0.906 1.004 BTSI028 1.102 BTA-Rx.xxxSE4-28-xxx 1.264 - 1.311 2.76 2.33 0.906 1.004 BTSI028 1.102 BTA-Rx.xxxSE4-30-xxx 1.311 - 1.370 2.76 2.32 1.004 1.102 BTSI030 1.181 BTA-Rx.xxxSE4-30-xxx 1.370 - 1.425 2.76 2.32 1.004 1.102 BTSI030 1.181 BTA-Rx.xxxSE4-33-xxx 1.426 - 1.469 3.23 2.70 1.063 1.181 BTSI033 1.299 BTA-Rx.xxxSE4-33-xxx 1.469 - 1.512 3.23 2.70 1.063 1.181 BTSI033 1.299 BTA-Rx.xxxSE4-33-xxx 1.512 - 1.559 3.23 2.69 1.063 1.181 BTSI033 1.299 BTA-Rx.xxxSE4-36-xxx 1.559 - 1.598 3.23 2.69 1.181 1.299 BTSI036 1.417 BTA-Rx.xxxSE4-36-xxx 1.599 - 1.646 3.23 2.68 1.181 1.299 BTSI036 1.417 BTA-Rx.xxxSE4-36-xxx 1.646 - 1.693 3.23 2.67 1.181 1.299 BTSI036 1.417 BTA-Rx.xxxSE4-39-xxx 1.693 - 1.744 3.23 2.74 1.299 1.417 BTSI039 1.535 BTA-Rx.xxxSE4-39-xxx 1.744 - 1.795 3.23 2.73 1.299 1.417 BTSI039 1.535 BTA-Rx.xxxSE4-39-xxx 1.796 - 1.850 3.23 2.72 1.299 1.417 BTSI039 1.535 BTA-Rx.xxxSE4-43-xxx 1.851 - 1.909 3.23 2.71 1.417 1.535 BTSI043 1.693 BTA-Rx.xxxSE4-43-xxx 1.910 - 1.972 3.23 2.70 1.417 1.535 BTSI043 1.693 BTA-Rx.xxxSE4-43-xxx 1.973 - 2.035 3.23 2.70 1.417 1.535 BTSI043 1.693 BTA-Rx.xxxSE4-47-xxx 2.036 - 2.094 3.66 2.96 1.555 1.693 BTSI047 1.850 BTA-Rx.xxxSE4-47-xxx 2.095 - 2.154 3.66 2.96 1.555 1.693 BTSI047 1.850 BTA-Rx.xxxSE4-47-xxx 2.154 - 2.213 3.66 2.96 1.555 1.693 BTSI047 1.850 BTA-Rx.xxxSE4-51-xxx 2.213 - 2.299 3.66 3.05 1.713 1.850 BTSI051 2.008 BTA-Rx.xxxSE4-51-xxx 2.300 - 2.386 3.66 3.03 1.713 1.850 BTSI051 2.008 BTA-Rx.xxxSE4-56-xxx 2.386 - 2.472 3.66 3.02 1.870 2.008 BTSI056 2.205 BTA-Rx.xxxSE4-56-xxx 2.473 - 2.559 3.66 3.01 1.870 2.008 BTSI056 2.205 Example: BTA-R0.744SE4-12-B45 • B = Chip backward design (F = chip forward design, available for through holes) • Dia. of reamer: 0.744" • Entering angle: 45 deg. Operating guidelines on page 714. = on request 651