1. GROOVE SPECIFICATIONS FOR V-BELT PULLEYS Figur 3 - Groov dimnsion nomnclatur or V-blts α go lp b Ectiv diamtr Datum diamtr d Tabl No. 1 - Groov dimnsions and tolrancs or Hi-Powr PowrBand according to RMA nginring standards Cross- Ectiv diam. Groov go d sction rang angl * mm a mm mm mm mm A - PowrBand < 140 34 ± 1/2 12. ± 0.13 12.4 ± 0.79 1.88 ± 0.60 9.3 (+1.78/-0) > 140 38 ± 1/2 12.80 ± 0.13 12.4 ± 0.79 1.88 ± 0.60 9.3 (+1.78/-0) B - PowrBand < 180 34 ± 1/2 16.18 ± 0.13 14.73 ± 0.79 19.0 ± 0.60 12.70 (+3.80/-0) > 180 38 ± 1/2 16.1 ± 0.13 14.73 ± 0.79 19.0 ± 0.60 12.70 (+3.80/-0) < 200 34 ± 1/2 22.33 ± 0.18 19.81 ± 0.79 2.40 ± 0.60 17.48 (+3.80/-0) C - PowrBand 200 to 31 36 ± 1/2 22.3 ± 0.18 19.81 ± 0.79 2.40 ± 0.60 17.48 (+3.80/-0) > 31 38 ± 1/2 22.73 ± 0.18 19.81 ± 0.79 2.40 ± 0.60 17.48 (+3.80/-0) < 3 34 ± 1/2 31.98 ± 0.18 26.67 ± 0.79 36.3 ± 0.60 22.23 (+6.3/-0) D - PowrBand 3 to 40 36 ± 1/2 32.28 ± 0.18 26.67 ± 0.79 36.3 ± 0.60 22.23 (+6.3/-0) > 40 38 ± 1/2 32.9 ± 0.18 26.67 ± 0.79 36.3 ± 0.60 22.23 (+6.3/-0) * Summation o th dviations rom or all groovs in any pully shall not xcd ± 1.2 mm. 38
Tabl No. 16 - Groov dimnsions and tolrancs or Supr HC PowrBand according to ISO 290 nginring standards Ectiv Groov go d Sction diamtr angl * mm a mm mm mm mm < 90 36 ± 1/4 8.9 ± 0.13 8.9 (+0.2/-0) 10.3 ± 0.40 9 (+2.4/-0) 9J 90 to 10 38 ± 1/4 8.9 ± 0.13 8.9 (+0.2/-0) 10.3 ± 0.40 9 (+2.4/-0) PowrBand 11 to 300 40 ± 1/4 8.9 ± 0.13 8.9 (+0.2/-0) 10.3 ± 0.40 9 (+2.4/-0) > 300 42 ± 1/4 8.9 ± 0.13 8.9 (+0.2/-0) 10.3 ± 0.40 9 (+2.4/-0) 1J < 20 38 ± 1/4 1.2 ± 0.13 1.2 (+0.2/-0) 17. ± 0.40 13 (+3.2/-0) PowrBand 20 to 400 40 ± 1/4 1.2 ± 0.13 1.2 (+0.2/-0) 17. ± 0.40 13 (+3.2/-0) > 400 42 ± 1/4 1.2 ± 0.13 1.2 (+0.2/-0) 17. ± 0.40 13 (+3.2/-0) 2J < 400 38 ± 1/4 2.4 ± 0.13 2.4 (+0.2/-0) 28.6 ± 0.40 19 (+6.3/-0) PowrBand 400 to 60 40 ± 1/4 2.4 ± 0.13 2.4 (+0.2/-0) 28.6 ± 0.40 19 (+6.3/-0) > 60 42 ± 1/4 2.4 ± 0.13 2.4 (+0.2/-0) 28.6 ± 0.40 19 (+6.3/-0) * Summation o th dviations rom or all groovs in any pully shall not xcd ± 0. mm or 9J and 1J, ± 0.8 mm or 2J. Tabl No. 17 - Groov dimnsions and tolrancs or Supr HC PowrBand according to RMA nginring standards Datum Ectiv Groov go d b Sction width diam. rang angl mm * mm mm a mm (minimum) mm mm mm 3V/3VX < 90 36 ± 1/4 8.89 ± 0.13 8.6 10.32 ± 0.40 8.73 (+2.4/-0) 0.6 and 90 to 10 38 ± 1/4 8.89 ± 0.13 8.6 10.32 ± 0.40 8.73 (+2.4/-0) 0.6 PowrBand 8.4 11 to 300 40 ± 1/4 8.89 ± 0.13 8.6 10.32 ± 0.40 8.73 (+2.4/-0) 0.6 > 300 42 ± 1/4 8.89 ± 0.13 8.6 10.32 ± 0.40 8.73 (+2.4/-0) 0.6 V/VX < 20 38 ± 1/4 1.24 ± 0.13 1.0 17.46 ± 0.40 12.7 (+3.2/-0) 1.2 and 14.4 20 to 400 40 ± 1/4 1.24 ± 0.13 1.0 17.46 ± 0.40 12.7 (+3.2/-0) 1.2 PowrBand > 400 42 ± 1/4 1.24 ± 0.13 1.0 17.46 ± 0.40 12.7 (+3.2/-0) 1.2 8V/8VK < 400 38 ± 1/4 2.4 ± 0.13 2.1 28.8 ± 0.40 19.0 (+6.3/-0) 2.4 and 23.6 400 to 60 40 ± 1/4 2.4 ± 0.13 2.1 28.8 ± 0.40 19.0 (+6.3/-0) 2.4 PowrBand > 60 42 ± 1/4 2.4 ± 0.13 2.1 28.8 ± 0.40 19.0 (+6.3/-0) 2.4 * Summation o th dviations rom or all groovs in any pully shall not xcd ± 0.79 mm. Groov dimnsions and tolrancs or Supr HC PowrBand according to th ISO 4183 nginring standards ar shown in tabl No. 18 (SPB-PB/SPC-PB) on pag 40. 39
Tabl No. 18 - Groov dimnsions and tolrancs according to ISO 4183, DIN 2211 and DIN 2217 nginring standards Blt Datum Datum Groov go d * b sction width diamtr angl Ip mm mm a mm mm mm mm mm D** mm E** mm 27 3 to 00 36 ± 1/2 32 28 (min.) 37 ± 0.60 24 (±2) 8.1 > 00 38 ± 1/2 32 28 (min.) 37 ± 0.60 24 (±2) 8.1 32 00 to 630 36 ± 1/2 40 33 (min.) 44. ± 0.70 29 (±2) 12 > 630 38 ± 1/2 40 33 (min.) 44. ± 0.70 29 (±2) 12 Z** SPZ*** XPZ A** SPA*** XPA B** SPB*** SPB-PB XPB C** SPC*** SPC-PB XPC 8. 63 to 80 34 ± 1 9.72 11 (+0.2/-0) 12 ± 0.30 8 ± 0.6 2 > 80 38 ± 1 9.88 11 (+0.2/-0) 12 ± 0.30 8 ± 0.6 2 11 90 to 118 34 ± 1 12.68 13.7 (+0.2/-0) 1 ± 0.30 10 ± 0.6 2.7 > 118 38 ± 1 12.89 13.7 (+0.2/-0) 1 ± 0.30 10 ± 0.6 2.7 14 140 to 190 34 ± 1 16.14 17. (+0.2/-0) 19 ± 0.40 12. ± 0.8 3. > 190 38 ± 1 16.41 17. (+0.2/-0) 19 ± 0.40 12. ± 0.8 3. 19 224 to 31 34 ± 1/2 21.94 24 (+0.2/-0) 2. ± 0.0 17 ± 1.0 4.8 > 31 38 ± 1/2 22.31 24 (+0.2/-0) 2. ± 0.0 17 ± 1.0 4.8 Tolrancs on datum diamtrs can b calculatd by applying th tolranc (+ 1.6 /- 0%) to th nominal valu o th datum diamtr in mm. * Ths tolrancs hav to b takn into account whn aligning th pullys. ** According to DIN 2217. *** According to DIN 2211 and ISO 4183. Important For PowrBands othr than SPB-PB and SPC-PB, rr to tabls 1 to 17 (pags 38 to 39). 40
2. GROOVE SPECIFICATIONS FOR MICRO-V BELT PULLEYS Figur 4 - Groov dimnsion nomnclatur or Micro-V blts Y α Dtail Y: Groov top Ra 30 min. db δ Ra Z Groov dimnsion Dtail Z: Groov bottom Th dsign o th groov top may not xcd indicatd minimum and maximum valus (dpnding on pully manuactur). Ri Th groov bottom dsign may not xcd th indicatd Ri valu (dpnding on pully manuactur). Tabl No. 19 - Groov dimnsions and tolrancs or Micro-V according to DIN 7867 and ISO 9982 nginring standards Sction Groov * Ri Ra angl mm mm mm a mm max. min. min. PJ 40 ± 1/2 2.34 ± 0.03 0.40 0.20 1.8 PL 40 ± 1/2 4.70 ± 0.0 0.40 0.40 3.3 PM 40 ± 1/2 9.40 ± 0.08 0.7 0.7 6.4 * Summation o th dviations rom or all groovs in any pully shall not xcd ± 0.30 mm. 41
3. GROOVE SPECIFICATIONS FOR POLYFLEX JB BELT PULLEYS Figur - Groov dimnsion nomnclatur or Polylx JB blts 90 ± 1/2 α go Rmov sharp burrs D K d** Datum diamtr Outsid diamtr r Outsid diamtr + 2K Bor axis 90 ± 1/2 ** Groov dpth to bottom o straight-sidwall portion groov; i.. tangnt point o d and r dimnsions. Tabl No. 20 - Groov dimnsions and tolrancs or Polylx JB Groov Outsid Groov angl go d** r 2K D dsignation diamtr a mm mm mm mm mm mm mm M 26-32 60 (± 1/4 ) 4.0 (± 0.0 mm) 3.28.30 (+0.13/-0.0) 3.4 0.4.71 4.0 33-97 62 (± 1/4 ) 4.0 (± 0.0 mm) 3.1.30 (+0.13/-0.0) 3.4 0.4.7 4.0 > 97 64 (± 1/4 ) 4.0 (± 0.0 mm) 3.0.30 (+0.13/-0.0) 3.4 0.4.79 4.0 7M 42-76 60 (± 1/4 ) 7.10 (± 0.0 mm).28 8.0 (+0.13/-0.0).6 0.6 10.20 7.0 > 76 62 (± 1/4 ) 7.10 (± 0.0 mm).08 8.0 (+0.13/-0.0).6 0.6 10.2 7.0 11M 67-117 60 (± 1/4 ) 11.20 (± 0.0 mm) 8.1 13.20 (+0.13/-0.0) 8.60 0.8 1.10 11.0 > 117 62 (± 1/4 ) 11.20 (± 0.0 mm) 8.20 13.20 (+0.13/-0.0) 8.60 0.8 1.19 11.0 NOTES 1. Th sids o th groov shall not xcd 3 micron (RMS) roughnss. 2. Th summation o th dviations rom or all groovs in any pully shall not xcd ± 0.30 mm. 3. Th tolranc on th outsid diamtr is: 0.13 mm or pullys with 26 mm up through 12 mm outsid diamtr; 0.38 mm or pullys with 126 mm up through 20 mm outsid diamtr; 0.76 mm or pullys with 21 mm up through 00 mm outsid diamtr; 1.27 mm or pullys with 01 mm outsid diamtr and mor. 4. Radial run-out shall not xcd 0.13 mm TIR* or outsid diamtrs up through 20 mm. Add 0.01 mm TIR* pr 2 mm o outsid diamtr mor than 20 mm.. Axial run-out shall not xcd 0.03 mm TIR* pr 2 mm o outsid diamtr or diamtrs up through 00 mm. Add 0.01 mm TIR* pr 2 mm o outsid diamtr or diamtrs mor than 00 mm. * TIR: Total Indicator Rading. ** Groov dpth to bottom o straight-sidwall portion groov; i.. tangnt point o d and r dimnsions. 42