Just to determine what flange and shaft of pump or motor you have, please see below excerpts from the next standards:
SAE J744. “Hydraulic Pump and Motor Mounting and Drive Dimensions”.
ISO 3019-1. “Dimensions and identification code for mounting flanges and shaft ends of displacement pumps and motors”.
Two bolts mounting flange
Two bolts mounting
| Standard Code | (P) Pilot Diameter | (K) Mounting Distance | (D) Bolt Hole Diameter |
|---|---|---|---|
| SAE AA ISO 50-2 |
2.00″ 50.8 mm |
3.25″ 82.6 mm |
0.406″ 10.3 mm |
| SAE A ISO 82-2 |
3.25″ 82.55 mm |
4.187″ 106.4 mm |
0.437″ 11.1 mm |
| SAE B ISO 101-2 |
4.00″ 101.6 mm |
5.75″ 146 mm |
0.562″ 14.3 mm |
| SAE C ISO 127-2 |
5.00″ 127 mm |
7.125″ 181 mm |
0.687″ 17.5 mm |
| SAE D ISO 152-2 |
6.00″ 152.4 mm |
9.00″ 228.6 mm |
0.812″ 20.6 mm |
| SAE E ISO 165-2 |
6.50″ 165.1 mm |
12.50″ 317.5 mm |
1.062″ 27 mm |
| SAE F ISO 177-2 |
7.00″ 177.8 mm |
13.781″ 350 mm |
1.062″ 27 mm |
Four bolts mounting flange
Four bolt mounting
| Standard Code | (P) Pilot Diameter | (K) Mounting Diameter | (S) Mounting Distance | (D) Bolt Hole Diameter |
|---|---|---|---|---|
| SAE B ISO 101-4 |
4.00″ 101.6 mm |
5.00″ n/a |
n/a 89.8 mm |
0.562″ 14.3 mm |
| SAE C ISO 127-4 |
5.00″ 127 mm |
6.375″ n/a |
n/a 114.5 mm |
0.562″ 14.3 mm |
| SAE D ISO 152-4 |
6.00″ 152.4 mm |
9.00″ n/a |
n/a 161.6 mm |
0.812″ 20.6 mm |
| SAE E ISO 165-4 |
6.50″ 165.1 mm |
12.50″ n/a |
n/a 224.5 |
0.812″ 20.6 mm |
| SAE F ISO 177-4 |
7.00″ 177.8 mm |
13.781″ n/a |
n/a 247.5 |
1.062″ 27 mm |
Straight (cylindrical) keyed shafts without thread
Straight (cylindrical) keyed shafts
| Standard Code | (D) Shaft Diameter | (SL) Shaft Length | (TL) Total Length | Key Width |
|---|---|---|---|---|
| SAE AA ISO 13-1 |
0.500″ 12.7 mm |
0.750″ 19 mm |
1.062″ 27 mm |
0.125″ 3.18 mm |
| SAE A ISO 16-1 |
0.625″ 15.88 mm |
0.937″ 24 mm |
1.250″ 32 mm |
0.156″ 3.97 mm |
| SAE AH ISO 19-1 |
0.750″ 19.05 mm |
0.937″ 24 mm |
1.250″ 32 mm |
0.187″ 4.78 mm |
| SAE B ISO 22-1 |
0.875″ 22.23 mm |
1.312″ 33 mm |
1.625″ 41 mm |
0.250″ 6.35 mm |
| SAE BB ISO 25-1 |
1.000″ 25.40 mm |
1.500″ 38 mm |
1.812″ 46 mm |
0.250″ 6.35 mm |
| SAE C ISO 32-1 |
1.250″ 31.75 mm |
1.875″ 48 mm |
2.187″ 56 mm |
0.312″ 7.94 mm |
| SAE CC ISO 38-1 |
1.500″ 38.10 mm |
2.125″ 54 mm |
2.437″ 62 mm |
0.375″ 9.53 mm |
| SAE D ISO 44-1 |
1.750″ 44.45 mm |
2.625″ 67 mm |
2.937″ 75 mm |
0.437″ 11.11 mm |
| SAE E | 1.750″ | 2.625″ | 2.937″ | 0.437″ |
30° involute splined shafts
30° involute splined shafts
| Standard Code | Spline Detail | (D) Shaft Diameter | (SL) Shaft Length | (TL) Total Length |
|---|---|---|---|---|
| SAE AA ISO 13-4 |
9T 20/40 DP | 0.500″ 12.7 mm |
0.750″ 19 mm |
1.062″ 27 mm |
| SAE A ISO 16-4 |
9T 16/32 DP | 0.625″ 15.88 mm |
0.937″ 24 mm |
1.250″ 32 mm |
| SAE AH ISO 19-4 |
11T 16/32 DP | 0.750″ 19.05 mm |
0.937″ 30 mm |
1.250″ 38 mm |
| SAE B ISO 22-4 |
13T 16/32 DP | 0.875″ 22.23 mm |
1.312″ 33 mm |
1.625″ 41 mm |
| SAE BB ISO 25-4 |
15T 16/32 DP | 1.000″ 25.40 mm |
1.500″ 38 mm |
1.812″ 46 mm |
| SAE C ISO 32-4 |
14T 12/24 DP | 1.250″ 31.75 mm |
1.875″ 48 mm |
2.187″ 56 mm |
| SAE CS ISO 35-4 |
21T 16/32 DP | 1.375″ 34.93 mm |
1.875″ 48 mm |
2.187″ 56 mm |
| SAE CC ISO 38-4 |
17T 12/24 DP | 1.500″ 38.10 mm |
2.125″ 54 mm |
2.437″ 62 mm |
| SAE D, SAE E ISO 44-4 |
13T 8/16 DP | 1.750″ 44.45 mm |
2.625″ 67 mm |
2.937″ 75 mm |
| SAE F ISO 50-4 |
15T 8/16 DP | 2.000″ 50.80 mm |
3.150″ 80 mm |
3.437″ 88 mm |
Thank you for providing this excellent compilation, VERY helpful.
Thank you – very useful information.
What are the shaft and keyway tolerances? Do you have standard to refer to?
See SAE J744: “Hydraulic Pump and Motor Mounting and Drive Dimensions”, page 4.
For God sakes will someone publish this for metric pumps!!!