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MACHINE TOOL SPINDLE BEARINGS
Radial Medium Series 300
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Notes:
- All bearings are available with shields or seals.
Add “Z” for single shield, “ZZ” for two shields,
"S" for single seal, "SS" for two seals as a
suffix to basic part number.
- Super precision bearings manufactured to a ABEC-7
(ISO P4) tolerance class.
- Functionally similar to the precision radial light series
"200", the precision radial medium series "300" is produced with a larger ball complement and
heavier races allowing greater radial, thrust and
combined load capacity for a given bore size. This
series is also capable of withstanding heavy shock
loads.
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Click on part number to check availability.
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PRECISION RADIAL - MEDIUM SERIES 300 |
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Bore
"d"
(mm) |
OD
"D"
(mm) |
Width
"B"
(mm) |
Alpine Bearing
Part No. |
Load Ratings
lbs |
Speed Ratings
RPM |
|
Static |
Dynamic |
Oil |
Grease |
| 10 |
35 |
11 |
R-300KEA7 |
845 |
1430 |
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| 12 |
37 |
12 |
R-301KEA7 |
1045 |
1655 |
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| 15 |
42 |
13 |
R-302KEA7 |
1215 |
1975 |
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| 17 |
47 |
14 |
R-303KEA7 |
1470 |
2335 |
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| 20 |
52 |
15 |
R-304KEA7 |
1750 |
2730 |
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| 25 |
62 |
17 |
R-305KEA7 |
2385 |
3690 |
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| 30 |
72 |
19 |
R-306KEA7 |
3130 |
4605 |
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| 35 |
80 |
21 |
R-307KEA7 |
4020 |
5775 |
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| 40 |
90 |
23 |
R-308KEA7 |
5020 |
7060 |
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| 45 |
100 |
25 |
R-309KEA7 |
7000 |
9120 |
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| 50 |
110 |
27 |
R-310KEA7 |
8010 |
10750 |
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| 55 |
120 |
29 |
R-311KEA7 |
9400 |
12410 |
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| 60 |
130 |
31 |
R-312KEA7 |
10900 |
14180 |
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| 65 |
140 |
33 |
R-313KEA7 |
12515 |
16050 |
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| 70 |
150 |
35 |
R-314KEA7 |
14240 |
18025 |
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PRECISION RADIAL - MEDIUM SERIES 300 |
Interchange Information
| ALPINE |
BARDEN |
FAFNIR |
GMN |
NHBB |
RHP |
| R-300KEA7 |
300T |
MM300K CR |
6300 TBHA7 |
R-300KEA7 |
6300TBEP7 |
| R-301KEA7 |
301T |
MM301K CR |
6301 TBHA7 |
R-301KEA7 |
6301TBEP7 |
| R-302KEA7 |
302T |
MM302K CR |
6302 TBHA7 |
R-302KEA7 |
6302 TBEP7 |
| R-303KEA7 |
303T |
MM303K CR |
6303TB HA7 |
R-303KEA7 |
6303 TBEP7 |
| R-304KEA7 |
304T |
MM304K CR |
6304TB HA7 |
R-304KEA7 |
6304 TBEP7 |
| R-305KEA7 |
305T |
MM305K CR |
6305TB HA7 |
R-305KEA7 |
6305 TBEP7 |
| R-306KEA7 |
306T |
MM306K CR |
6306TB HA7 |
R-306KEA7 |
6306 TBEP7 |
| R-307KEA7 |
307T |
MM307K CR |
6307TB HA7 |
R-307KEA7 |
6307 TBEP7 |
| R-308KEA7 |
308T |
MM308K CR |
6308TB HA7 |
R-308KEA7 |
6308 TBEP7 |
| R-309KEA7 |
309T |
MM309K CR |
6309TB HA7 |
R-309KEA7 |
6309 TBEP7 |
| R-310KEA7 |
310T |
MM310K CR |
6310TB HA7 |
R-310KEA7 |
6310 TBEP7 |
| R-311KEA7 |
311T |
MM311K CR |
6311TB HA7 |
R-311KEA7 |
6311 TBEP7 |
| R-312KEA7 |
312T |
MM312K CR |
6312TB HA7 |
R-312KEA7 |
6312 TBEP7 |
| R-313KEA7 |
313T |
MM313K CR |
6313TB HA7 |
R-313KEA7 |
6313 TBEP7 |
| R-314KEA7 |
314T |
MM314K CR |
6314TB HA7 |
R-314KEA7 |
6314 TBEP7 |
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