CHIARAVALLI
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TECHNICAL NOTES
Selecting the correct type of angle bevel gear is not simply a question of defining the power required in relation to R.P.M. and the torque to be transmitted. If also involves defining the conditions under wich the angle bevel gear will be used. Defining operating conditions involves taking into consideration a number of factor such as the type of operating cycle (intermittent, continuous), radial and axial loads on the shaft ends, maximum and minimum temperatures, ambient conditions (e.g. dust and dirt levels) and the type of lubricant used. To decide the type and size of angle bevel gear required, proceed as follows.
1) Use table 2 to define the Service Factor for your application.
2) Calculate the Rated Power (Pn); Pn = Pe (Horsepower) x FS.
3) Use the output speed and the rated power (Pn) to select the angle gear size and transmission ratio required for your application.
4) Check that the radial and axial load at the midpoint of the exposed shaft end does not exceed the values shown in table 1.
5) Check that the operating temperature does not exceed -20°C ÷ 80°C
6) If you require a 1/2 or 1/3 ratio, do not use a speed multiplier with an input more than 750 R.P.M.and 500 R.P.M. in ratio 1/2 and 1/3, respectively.
7) If the unit is to be used in very dusty conditions, protect the oil seal against direct exposure to dust to prevent abrasive damage which might shorten the working life of the unit.
TABLE 1
MAX RADIAL AND AXIAL LOADS
144
SIZE MAX AXIAL LOAD IN Kg. MAX RADIAL LOAD IN Kg.
RB1 | 21 | 11 |
RB2 | 41 | 20 |
RB3 | 76 | 43 |
RB4 | 88 | 49 |
RP1 | 28 | 15 |
RP2-3/4 | 53 | 30 |
RP5-6 | 65 | 45 |
RP7 | 80 | 60 |
HOW TO SELECT THE CORRECT RIGHT-ANGLE BEVEL GEAR
TABLE 2
SERVICE FACTOR Fs
hours of operation for day | |||||
3 | 8 | 12 | 24 | ||
uniform load | 0.7 | 0.9 | 1 | 1.3 | |
load with moderate shocks | 0.9 | 1 | 1.3 | 1.8 | |
load with shocks | 1.3 | 1.6 | 1.8 | 2.3 | |
Output speed | 50 rpm | 100 rpm | 200 rpm | 400 rpm | 800 rpm | 1400 rpm | 2000 rpm | 3000 rpm | ||||||||||
Output torque | T power | T | power | T | power | T | power | T | power | T | power | T | power | T | power | |||
Type | Ratio | Nm | Kw | Nm | Kw | Nm | Kw | Nm | Kw | Nm | Kw | Nm | Kw | Nm | Kw | Nm | Kw | |
RB 1-1/2- RB 1-5 | R 1:1 | 4,7 | 0,02 | 3,9 | 0,04 | 3,3 | 0,07 | 2,8 | 0,12 | 2,3 | 0,19 | 2,0 | 0,30 | 1,8 | 0,39 | 1,7 | 0,53 | |
RP 1-1/2- RP 1-5 | 9,1 | 0,05 | 7,6 | 0,08 | 6,4 | 0,13 | 5,4 | 0,23 | 4,5 | 0,38 | 4,0 | 0,58 | 3,6 | 0,76 | 3,3 | 1,03 | ||
RB 2-1/2- RB 2-5 | 16,5 | 0,09 | 13,9 | 0,15 | 11,7 | 0,24 | 9,8 | 0,41 | 8,2 | 0,69 | 7,2 | 1,05 | 6,6 | 1,37 | 5,9 | 1,86 | ||
RP 3-10 | 28,8 | 0,15 | 24,2 | 0,25 | 20,3 | 0,43 | 17,1 | 0,72 | 14,4 | 1,20 | 12,5 | 1,83 | 11,4 | 2,39 | 10,3 | 3,25 | ||
RP 2-1/2 RP 4-13/14 RP 2-7 RP 4-19 | 34,5 | 0,18 | 29,0 | 0,30 | 24,4 | 0,51 | 20,5 | 0,86 | 17,2 | 1,44 | 15,0 | 2,20 | 13,7 | 2,87 | 12,4 | 3,89 | ||
RB 3-1/2 RB 3-5 | 53,1 | 0,28 | 44,6 | 0,47 | 37,5 | 0,79 | 31,6 | 1,32 | 26,5 | 2,22 | 23,1 | 3,38 | 21,1 | 4,42 | 19,1 | 5,99 | ||
RP 6-10 | 75,7 | 0,40 | 63,7 | 0,67 | 53,5 | 1,12 | 45,0 | 1,89 | 37,9 | 3,17 | 32,9 | 4,82 | 30,1 | 6,30 | 27,2 | 8,54 | ||
RB 4-1/2 - RP 5-1/2 RP 7-1/2- RB 4-5 RP 5-7- RP 7-7 | 87,3 | 0,46 | 73,4 | 0,77 | 61,8 | 1,29 | 51,9 | 2,17 | 43,7 | 3,66 | 38,0 5,56 | 34,7 7,27 | 31,4 | 9,86 | ||||
RB 1-3/4- RB 1-6 | R 1:2 | 4,0 | 0,02 | 3,4 | 0,04 | 2,8 | 0,06 | 2,4 | 0,10 | 2,0 | 0,17 | 1,7 | 0,26 | 1,6 | 0,33 | 1,4 | 0,45 | |
RP 1-3/4- RP 1-6 | 8,9 | 0,05 | 7,5 | 0,08 | 6,3 | 0,13 | 5,3 | 0,22 | 4,4 | 0,37 | 3,9 | 0,57 | 3,5 | 0,74 | 3,2 | 1,00 | ||
RB 2-3/4- RB 2-6 | 14,6 | 0,08 | 12,3 | 0,13 | 10,3 | 0,22 | 8,7 | 0,36 | 7,3 | 0,61 | 6,3 | 0,93 | 5,8 | 1,21 | 5,2 | 1,65 | ||
RP 3-11 | 28,1 | 0,15 | 23,7 | 0,25 | 19,9 | 0,42 | 16,7 | 0,70 | 14,1 | 1,18 | 12,2 | 1,79 | 11,2 | 2,34 | 10,1 | 3,17 | ||
RP 2-3/4 RP 4-15/16 RP 2-8 RP 4-20 | 33,8 | 0,18 | 28,5 | 0,30 | 23,9 | 0,50 | 20,1 | 0,84 | 16,9 | 1,42 | 14,7 | 2,16 | 13,5 | 2,82 | 12,2 | 3,82 | ||
RB 3-3/4-RB 3-6 | 42,5 | 0,22 | 35,7 | 0,37 | 30,1 | 0,63 | 25,3 | 1,06 | 21,3 | 1,78 | 18,5 | 2,71 | 16,9 | 3,54 | 15,3 | 4,80 | ||
RP 6-11 | 71,3 | 0,37 | 59,9 | 0,63 | 50,4 | 1,06 | 42,4 | 1,77 | 35,6 | 2,98 | 31,0 | 4,54 | 28,3 | 5,93 | 25,6 | 8,04 | ||
RB 4-3/4 - RP 4-6 RP 7-3/4- RB 4-6 RP 5-8- RP 7-8 | 82,3 | 0,43 | 69,2 | 0,72 | 58,2 | 1,22 | 48,9 | 2,05 | 41,1 | 3,44 | 35,8 5,24 | 32,7 6,85 | 29,6 | 9,28 | ||||
RP 2-5/6 RP 2-9 RP 3-12 RP 4-17/18 RP 4-21 | R 1:3 | 27,5 | 0,14 | 23,1 | 0,24 | 19,4 | 0,41 | 16,3 | 0,68 | 13,7 | 1,15 | 12,0 | 1,75 | 10,9 | 2,29 | 9,9 | 3,10 | |
RP 5-5/6 RP 5-9 RP 6-12 RP 7-5/6 RP 7-9 | 63,4 | 0,33 | 53,3 | 0,56 | 44,9 | 0,94 | 37,7 | 1,58 | 31,7 | 2,66 | 27,6 | 4,04 | 25,2 | 5,28 | 22,8 | 7,16 | ||
INPUT POWER (Pn) OUTPUT TORQUE T
145
EXTERNAL LOADS IN CONNECTION WITH SPEED Fr = radial load Fa = axial load
Output speed | 50 rpm | 100 rpm | 200 rpm | 400 rpm | 800 rpm | 1400 rpm | 2000 rpm | 3000 rpm | ||||||||||
Radial - axial load | Fr | Fa | Fr | Fa | Fr | Fa | Fr | Fa | Fr | Fa | Fr | Fa | Fr | Fa | Fr | Fa | ||
Type | Ratio | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | |
RB 1-1/2- RB 1-5 | R 1:1 | 139 | 94 | 117 | 79 | 98 | 66 | 83 | 56 | 70 | 47 | 60 | 41 | 55 | 37 | 50 | 34 | |
RP 1-1/2- RP 1-5 | 195 | 158 | 164 | 133 | 138 | 112 | 116 | 94 | 98 | 79 | 85 | 69 | 78 | 63 | 70 | 57 | ||
RB 2-1/2- RB 2-5 | 328 | 220 | 276 | 185 | 232 | 156 | 195 | 131 | 164 | 110 | 142 | 96 | 130 | 87 | 118 | 79 | ||
RP 3-10 | 430 | 348 | 361 | 293 | 304 | 246 | 256 | 207 | 215 | 174 | 187 | 151 | 171 | 139 | 154 | 125 | ||
RP 2-1/2 RP 4-13/14 RP 2-7 RP 4-19 | 516 | 418 | 434 | 351 | 365 | 295 | 307 | 248 | 258 | 209 | 224 | 182 | 205 | 166 | 185 | 150 | ||
RB 3-1/2 RB 3-5 | 684 | 458 | 575 | 385 | 484 | 324 | 407 | 273 | 342 | 229 | 297 | 199 | 272 | 182 | 246 | 165 | ||
RP 6-10 | 826 | 554 | 695 | 465 | 584 | 391 | 491 | 329 | 413 | 277 | 359 | 241 | 329 | 220 | 297 | 199 | ||
RB 4-1/2 - RP 5-1/2 RP 7-1/2- RB 4-5 RP 5-7- RP 7-7 | 953 | 639 | 802 | 537 | 674 | 452 | 567 | 380 | 477 | 319 | 414 | 278 | 379 | 254 | 342 | 229 | ||
RB 1-3/4- RB 1-6 | R 1:2 | 107 | 76 | 90 | 64 | 76 | 54 | 64 | 45 | 54 | 38 | 47 | 33 | 43 | 30 | 39 | 27 | |
RP 1-3/4- RP 1-6 | 182 | 110 | 153 | 93 | 129 | 78 | 108 | 66 | 91 | 55 | 79 | 48 | 73 | 44 | 66 | 40 | ||
RB 2-3/4- RB 2-6 | 276 | 168 | 232 | 141 | 195 | 119 | 164 | 100 | 138 | 84 | 120 | 73 | 110 | 67 | 99 | 60 | ||
RP 3-11 | 370 | 263 | 311 | 221 | 262 | 186 | 220 | 157 | 185 | 132 | 161 | 114 | 147 | 105 | 133 | 95 | ||
RP 2-3/4 RP 4-15/16 RP 2-8 RP 4-20 | 445 | 316 | 374 | 266 | 315 | 224 | 265 | 188 | 223 | 158 | 194 | 137 | 177 | 126 | 160 | 114 | ||
RB 3-3/4-RB 3-6 | 548 | 361 | 461 | 303 | 387 | 255 | 326 | 214 | 274 | 180 | 238 | 157 | 218 | 143 | 197 | 130 | ||
RP 6-11 | 696 | 422 | 585 | 355 | 492 | 299 | 414 | 251 | 348 | 211 | 303 | 184 | 277 | 168 | 250 | 152 | ||
RB 4-3/4 - RP 4-6 RP 7-3/4- RB 4-6 RP 5-8- RP 7-8 | 803 | 483 | 675 | 406 | 568 | 341 | 478 | 287 | 402 | 241 | 349 | 210 | 319 | 192 | 289 | 173 | ||
RP 2-5/6 RP 2-9 RP 3-12 RP 4-17/18 RP 4-21 | R 1:3 | 357 | 199 | 301 | 167 | 253 | 141 | 213 | 118 | 179 | 99 | 155 | 86 | 142 | 79 | 128 | 71 | |
RP 5-5/6 RP 5-9 RP 6-12 RP 7-5/6 RP 7-9 | 619 | 346 | 521 | 291 | 438 | 245 | 368 | 206 | 310 | 173 | 269 | 151 | 246 | 138 | 222 | 124 | ||
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
146
SIZE 1
MOD. R B
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | |||||
A | 1/1 | A | B | R1081101 | 0.3 | ||||
1/1 | A | C | R1081102 | ||||||
B | C | 1/2 1/2 | A A | B C | R1081203 R1081204 | ||||
1/1 | A | B-C | R1081105 | ||||||
1/2 | A | B-C | R1081206 | ||||||
15
5 (x 3)
32 (x 3)
60
Holes Holes x 3 flanges
16 16
15 15
40 (x 3)
2,5 (x 3)
15
16 16
34 34
68 15
11 11
33
SIZE 2
MOD. R B
CHT
147
RATIO INPUT OUTPUT CODE WEIGHT Kg
1/1 | A | B | R1151101 |
1/1 | A | C | R1151102 |
1/2 | A | B | R1151203 |
1/2 | A | C | R1151204 |
1/1 | A | B-C | R1151105 |
1/2 | A | B-C | R1151206 |
A
1.1
B C
1.2
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
Oil plug
3 Holes
Holes x 3 flanges
SIZE 3
MOD. R B
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | |||||
A | 1/1 | A | B | R1201101 | 3.4 | ||||
1/1 1/2 | A A | C B | R1201102 R1201203 | ||||||
B
| C | 1/2 | A | C | R1201204 | ||||
1/1 | A | B-C | R1201105 | 3.5 | |||||
1/2 | A | B-C | R1201206 | ||||||
Oil plug
Holes
Holes x 3 flanges
148
SIZE 4
MOD. R B
CHT
RATIO INPUT OUTPUT CODE WEIGHT Kg
A 1/1 A B R1251101 1/1 A C R1251102
1/2 A B R1251203
B C 1/2 A C R1251204
1/1 A B-C R1251105
1/2 A B-C R1251206
5.5
5.8
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
Oil plug
Holes
Holes x 3 flanges
SIZE 1
MOD. R P
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | ||
A | 1/1 | A | B | R3081101 | 0.6 | |
1/1 | A | C | R3081102 | |||
B | C | 1/2 1/2 | A A | B C | R3081203 R3081204 | |
1/1 | A | B-C | R3081105 | |||
1/2 | A | B-C | R3081206 | |||
Holes x 2 flanges
Holes
Holes
149
SIZE 2
MOD. R P
CHT
RATIO INPUT OUTPUT CODE WEIGHT Kg
1/1 | A | B | R3141101 | |||
A | 1/1 | A | C | R3141102 | ||
1/2 | A | B | R3141203 | |||
1/2 | A | C | R3141204 | |||
B | C | 1/3 | A | B | R3141305 | |
1/3 | A | C | R3141306 | |||
1/1 | A | B-C | R3141107 | |||
1/2 | A | B-C | R3141208 | |||
1/3 | A | B-C | R3141309 | |||
2
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
Holes
Oil plug
Holes x 2 flanges
SIZE 3
MOD. R P
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | ||
A | 1/1 | A | B-C | R3141110 | 2 | |
1/2 | A | B-C | R3141211 | |||
1/3 | A | B-C | R3141312 | |||
B
| C
| |||||
Hub
Holes
Oil plug
Holes x 3 flanges
150
SIZE 4
MOD. R P
CHT
RATIO INPUT OUTPUT CODE WEIGHT Kg
1/1 | A | B-C | R3141113 |
1/1 | A | C-D | R3141114 |
1/2 | A | B-C | R3141215 |
1/2 | A | C-D | R3141216 |
1/3 | A | B-C | R3141317 |
1/3 | A | C-D | R3141318 |
1/1 | A | B-C-D | R3141119 |
1/2 | A | B-C-D | R3141220 |
1/3 | A | B-C-D | R3141321 |
B
C A
3.2
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
D
Holes x 4 flanges
Holes
Oil plug
SIZE 5
MOD. R P
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | ||
A | 1/1 | A | B | R3191101 | 4.5 | |
1/1 1/2 | A A | C B | R3191102 R3191203 | |||
1/2 | A | C | R3191204 | |||
B
| C | 1/3 1/3 | A A | B C | R3191305 R3191306 | |
1/1 | A | B-C | R3191107 | |||
1/2 | A | B-C | R3191208 | |||
1/3 | A | B-C | R3191309 | |||
Oil plug
Holes
Holes x 2 flanges
Holes
151
SIZE 6
MOD. R P
CHT
RATIO INPUT OUTPUT CODE WEIGHT Kg
A 1/1 A B-C R3191110 1/2 A B-C R3191211
1/3 A B-C R3191312
B C
4.5
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
Oil plug
Holes
Holes x 2 flanges
Hub
Holes
SIZE 7
MOD. R P
CHT
RATIO | INPUT | OUTPUT | CODE | WEIGHT Kg | |||||
A | 1/1 | A | B | R3241101 | 4.5 | ||||
1/1 1/2 | A A | C B | R3241102 R3241203 | ||||||
1/2 | A | C | R3241204 | ||||||
B | C | 1/3 1/3 | A A | B C | R3241305 R3241306 | ||||
1/1 | A | B-C | R3241107 | ||||||
1/2 | A | B-C | R3241208 | ||||||
1/3 | A | B-C | R3241309 | ||||||
Oil plug
Holes
Holes
x 2 flanges
Holes
RIGHT-ANGLE PRECISION BEVEL GEAR DRIVES
152
