Schmidt L200-L300 Series

The L200 and L300 series are equipped with caged-type needle bearings. These bearings run on hardened shafts which serve as the inner race of the needle bearings.

The coupling can be mounted on shaft hubs or directly to existing machine flanges. These couplings offer a drop-out design, which means the coupling may be installed without any need to move either of the hubs.

The Schmidt Offset Coupling has a slight built-in axial freedom to compensate for thermal shaft expansion and assembly tolerances.

If you wish, you can use the Sizing Software which will take your information and automatically suggest the correct Schmidt Coupling.

Go to L100 Series

Go to Offset Main Page

How to Select an L200/L300 Series Offset Coupling:
Step 1. List the performance requirements
A) Horsepower (HP)
B) Shaft Speed (RPM)
C) B-10 Bearing Lifetime (B-10)
D) Offset from fixed shaft (PH)
E) Variable Offset (if required) (PA)

Step 2.
Select a coupling with the required offset characteristics. All offset couplings have a minimum offset (Smin), a maximum offset (Smax) and a maximum linear range of shaft displacement (Sml). For applications where the offset distance between shafts remains FIXED, simply select a coupling with an offset larger than Smin and smaller than Smax. For applications where the shaft offset distance VARIES during operation, select a coupling where the linear range of displacement is less than the Sml.

Note: At no time can the shafts be separated by more than Smax nor less than Smin. To use all of Sml, X must be equal to Smin and PH must equal PA/2.

Recommended Operational area
for shaft displacement 

Step 3.
Select the lifetime speed factor "L" from the chart on the right using your required Shaft Speed (N) and Bearing Lifetime (B-10).

Step 4.
Calculate the required performance factor:
Pr = H/L

Step 5.
Compare the required performance factor "Pr" listed on the performance data table. Select a coupling size which has a "P" factor that's equal to or higher than "Pr".

Step 6.
Compare the practical speed limit on the performance data table.

Step 7.
Check the dimensions of the coupling, using the Dimensions Chart.

Step 8.
Select hubs (if required) from the Hub Selection Chart.

Lifetime-Speed Factor "L"

Shaft
Speed N (RPM)

B-10 Lifetime (Hours)

1000 2500 5000 10000 25000 50000
10
25
50
100		 0.631
1.198
1.947
3.162		 0.479
0.910
1.479
2.402		 0.389
0.739
1.201
1.951		 0.316
0.601
0.976
1.585		 0.240
0.456
0.741
1.204		 0.195
0.371
0.601
0.978
150
200
250
300		 4.200
5.137
6.001
6.823		 3.191
3.902
4.562
5.183		 2.502
3.170
3.706
4.210		 2.105
2.575
3.010
3.420		 1.599
1.956
2.287
2.598		 1.299
1.589
1.857
2.110
400
500
600
700		 8.345
9.756
11.08
12.34		 6.340
7.411
8.420
9.379		 5.149
6.020
6.839
7.618		 4.182
4.889
5.555
6.188		 3.177
3.714
4.220
4.700		 2.581
3.017
3.428
3.818
800
900
1000
1100		 13.56
14.72
15.85
16.94		 10.30
11.18
12.04
12.87		 8.365
9.084
9.779
10.45		 6.795
7.378
7.943
8.491		 5.161
5.605
6.034
6.450		 4.192
4.553
4.901
5.391
1200
1300
1400
1500		 18.01
19.04
20.06
21.05		 13.68
14.47
15.24
15.99		 11.11
11.75
12.38
12.99		 9.025
9.545
10.05
10.55		 6.856
7.250
7.636
8.015		 5.568
5.889
6.203
6.510
1600
1700
1800		 22.02
22.98
23.92		 16.73
17.45
18.17		 13.59
14.18
14.76		 11.04
11.52
11.99		 8.385
8.748
9.105		 6.810
7.106
7.396
2000
2100
2200
2300		 25.75
26.64
27.52
28.39		 19.56
20.24
20.91
21.57		 15.89
16.44
16.98
17.52		 12.90
13.35
13.79
14.23		 9.803
10.14
10.48
10.81		 7.962
8.238
8.511
8.780
2400
2500		 29.25
30.10		 22.22
22.86		 18.05
18.57		 14.66
15.08		 11.14
11.46		 9.046
9.308

Go to L100 Series

Go to Offset Main Page

The right to make engineering refinements on all products is reserved.
Dimensions and other details subject to change.
When dimensions are critical, detailed drawings should be obtained from the factory.

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