GERHARDT GEAR CO., INC. 133 E. Santa Anita Ave. Burbank CA, 91502-1926 Ph.- (818) 842-6700 Fax - (818) 842-1458
Involute Spline and Serration Program
ver. 1.1
** FOLLOW INSTRUCTIONS ON PAGE 3 ** STEP 1) Please enter the number which corr esponds to the drawing specification: = . 2 = ANSI = ANSI B92.1-1996 3 = ASA = ASA B5.15-1960 4 = SAE STANDARD - 1950
2
= 6 = NAS 541/2, 580/1 7 = DS360/361
DS Dash no.
1
STEP 2) Please enter a 1 for external teeth or a 2 for internal teeth: (DS360 - External 30 deg DS361 - Internal 30 deg)
STEP 3) Please enter the number which corresponds to the desired fit type (if applicable): 1 = Flat Root, Side Fit 2 = Fillet Root, Side Fit
3 = Flat Root, Major Dia. Fit 4 = Minor Dia. Fit
2
For SA E-1950 E-1950 Major & Min or Dia. Fit, enter clas s 1,2 OR 3: (For Minor Dia Fit enter 1 for Class X, 2 for Class Y, 3 for Class Z)
STEP 4) Please 4) Please enter the number which corresponds to the desired class of fit (if applicable): ANSI:
4 = Class 4 - ANSI 5 = Class 5 - ANSI 6 = Class 6 - ANSI 7 = Class 7 - ANSI
ASA:
1 = Class 1 - ASA 2 = Class 2 - ASA
SAE:
8 = Class A - SAE
9 = Class B - SAE 10 = Class C - SAE
4
STEP 5) Please enter the number of teeth, diametral pitch and pressure angle: . . . . . . . N DP PA 27 32 . note: enter the first number only for DP (no fractions).
.
. 30
For SAE J500, enter the Nominal Diameter
SPLINE / SERRATION S ERRATION DATA External Spline
Fillet Root Side Fit
0.00047 N= 27 0.875 DP = 32 PA = 30 0.872 PD = 0.843750 NA BASE DIA = 0.730709 MOW/MBW = 0.076516 MOW/MBW = 0.068304 MOW/MBW = 0.066252
MACH TOL = MAX ACT = MIN ACT = MAX EFF = MIN EFF = 0.9325 TO 0.9154 TO 0.9111 TO
ANSI B92.1-1996 0.00092 0.0481 0.0472 0.0491 0.0482 0.9339 0.9168 0.9125
MAJOR MIN = MAJOR MAX = MINOR MIN = MINOR MAX = FORM DIA = OVER 0.0600 OVER 0.0540 OVER 0.0525
Class 4 0.8720 0.8750 0.7690 0.7810 0.8080 PINS PINS PINS
PLATING ALLOWANCE Calculation for MOW / MBW (With Plating) MIN. PLATING PER FLANK = N= DP = PA = MAX. CTT/SPW = MIN. CTT/SPW = WIRE DIA. =
MAX. PLATING PER FLANK =
0.0027 27 32 30 0.0425 0.0418 0.0600
MAX. MOW/MBW = MIN. MOW/MBW =
0.9250 0.9239
0.0028 1
0.804983 0.9250 0.9239 0.803855
0.05037 0.053751 0.082112 0.116355 0.069879 0.583708 0.565862 0.56746 0.56732 0.049541 0.58315 0.580714 0.069049 0.581412 0.563845 0.565404 0.565268 0.746678 0.745153 Calculation for Tooth Thickness (No Plating) 0.1747 MAX. MOW/MBW = MAX. CTT/SPW = 0.9339 0.0481 0.0481 MIN. MOW/MBW = MIN. CTT/SPW = 0.9325 0.0472 0.0472 0.1736
SPLINE / SERRATION DATA - VARIATION ALLOWANCES STEP 1) Please enter the length of engagement in inches. LEAD VARIATION = POS. PROFILE VARIATION = NEG. PROFILE VARIATION =
0.0005 0.0002 0.0004
2
TOTAL INDEX VARIATION = VARIATION ALLOWANCE =
0.0027 0.0021 0.0019 0.0018 0.0016 0.0014 0.0027 ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR
0.0013
0.0014 0.00142
0.0013
0.0013
Program Notes: ANSI, ASA, & SAE 1950: Step 1: Enter only 1 thru 4 in the first box, the second box (DS dash #) should be left blank. Step 2: Enter 1 or 2. Step 3: Enter 1 thru 4 in the first box for the fit type. The second box applies only for SAE 1950, and only for a major or minor fit type, otherwise leave it blank. Step 4: Enter 1 or 2 for ASA, 4 thru 7 for ANSI, or 8 thru 10 for SAE 1950. Step 5: Enter in the appropriate box the desired number of teeth, diametral pitch and pressure angle. Leave the box for nominal diameter blank, it applies only for J500. SAE J500 Step 1: Enter 5 in the first box, the second box (DS dash #) should be left blank. Step 2: Enter 1 or 2. Step 3: N/A, leave blank. Step 4: N/A, leave blank. Step 5: The ONLY required box to enter is the nominal diameter. It may be entered as a decimal or a fraction. A space must be left between whole numbers and fractions. Example: 1 (space bar) 3/4. Otherwise it will be read as 13/4 (Thirteen fourths). NAS Step 1: Enter 6 in the first box, the second box (DS dash #) should be left blank. Step 2: Enter 1 or 2. Step 3: N/A, leave blank. (all NAS have a fillet root) Step 4: N/A, leave blank. Step 5: Enter in the appropriate box the desired number of teeth, diametral pitch and pressure angle. Leave the box for nominal diameter blank, it applies only for J500. DS Step 1: Enter 7 in the first box, enter the dash number in the second. Dash numbers range from 306 thru 406 for DS360(EXT), and from 06 thru 106 for DS361(INT). Step 2: Enter 1 or 2. Steps 3 thru 5: N/A, leave blank. (N, DP, and PA are determined by the dash #)
GERHARDT GEAR CO., INC. 133 E. Santa Anita Ave. Burbank CA, 91502-1926 Ph.- (818) 842-6700 Fax - (818) 842-1458
Involute Spline and Serration Program STEP 1) Please enter the number which corr esponds to the drawing specification: 1 = ANSI B92.1-1970 2 = ANSI B92.1-1996 3 = ASA B5.15-1960 4 = SAE STANDARD - 1950
5 = SAE J500 6 = NAS 541/2, 580/1 7 = DS360/361
2 00
Enter D S dash num ber here.
(NAS 541 - Internal 45 deg NAS 542 - External 45 deg NAS 580 - Internal 30 deg NAS 581 - External 30 deg)
1
STEP 2) Please enter a 1 for external teeth or a 2 for internal teeth: (DS360 - External 30 deg DS361 - Internal 30 deg)
STEP 3) Please enter the number which corresponds to the desired fit type (if applicable): 1 = Flat Root, Side Fit 2 = Fillet Root, Side Fit
3 = Flat Root, Major Dia. Fit 4 = Minor Dia. Fit
For SA E-1950 Major & Mino r Dia. Fit, enter c lass 1,2 OR 3: (For Minor Dia Fit enter 1 for Class X, 2 for Class Y, 3 for Class Z)
STEP 4) Please enter the number which corresponds to the desired class of fit (if applicable): 4 = Class 4 - ANSI 5 = Class 5 - ANSI 6 = Class 6 - ANSI 7 = Class 7 - ANSI
ANSI:
ASA:
1 = Class 1 - ASA 2 = Class 2 - ASA
SAE:
8 = Class A - SAE
9 = Class B - SAE 10 = Class C - SAE
STEP 5) Please enter the number of teeth, diametral pitch and pressure angle: N
DP
PA
note: enter the first number only for DP (no fractions). For SAE J500, enter the Nominal Diameter
SPLINE / SERRATION DATA External Spline N= ERROR DP = ERROR PA = ERROR PD = #VALUE! BASE DIA = N/A MOW/MBW = MOW/MBW = MOW/MBW =
N/A MACH TOL = MAX ACT = MIN ACT = MAX EFF = MIN EFF = ERROR TO TO TO
N/A N/A N/A N/A N/A N/A ERROR
MAJOR MIN = MAJOR MAX = MINOR MIN = MINOR MAX = FORM DIA = OVER #VALUE! OVER #VALUE! OVER #VALUE!
ERROR ERROR ERROR ERROR N/A PINS PINS PINS
ERROR
ERROR
ERROR ERROR
ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR ERROR ERROR
ERROR ERROR
ERROR ERROR
