Precision Thrust Bearing for Machine Tool Spindles
The 234480M double direction angular contact thrust ball bearing is a high-precision thrust bearing engineered for machine tool spindle applications requiring accurate axial positioning, high stiffness, and stable bidirectional load support. It is designed to carry axial loads in both directions while maintaining excellent rotational accuracy under demanding operating conditions.
Technical Specifications
| Bearing Type | Double direction angular contact thrust ball bearing |
| Type number | FAG 234480M |
| Inner Diameter | 400 mm |
| Outer Diameter | 600 mm |
| Height | 236 mm |
| Basic load ratings | Cr = 680 kN, Cor = 3650 kN |
| Limited Speeds | Grease: 900 n/min, Oil: 1300 n/min |
| Weight | 198 kg |
| Precision Grade | SP, better than P5, |
| Application | usually used for spindle, matched with bearing NN3080 ASK. M. SP |


Structure Features
This precision thrust bearing features a double-row angular contact ball design, allowing it to support axial forces from either direction and accommodate limited radial loads. The optimized contact angle provides enhanced axial rigidity, making the bearing especially suitable for CNC machine tool spindles, precision machining centers, and high-accuracy rotary systems.
Equipped with an M-type machined brass cage, the 234480M ensures reliable ball guidance, reduced friction, and stable performance at higher speeds. The robust cage structure improves wear resistance and thermal stability, which are critical requirements for high-speed machine tool spindle bearings operating over long duty cycles.
Applications
The 234480M precision thrust bearing is widely used in machine tool spindles, precision gearboxes, rolling mills, industrial pumps, and heavy-duty drive units, where high axial load capacity, precise shaft location, and long service life are essential.

machine tool spindles

precision gearboxes

rolling mills

industrial pumps
As a machine tool spindle thrust bearing, the 234480M delivers consistent accuracy, high axial stiffness, and dependable performance, making it an ideal choice for advanced manufacturing and precision engineering applications.
Related Products
Related Products include single direction angular contact thrust ball bearings, tapered roller thrust bearings, and high-precision cylindrical roller thrust bearings. These bearings are widely used in machine tool spindles, precision gearboxes, and industrial drive systems, offering reliable axial load support, high stiffness, and long service life for demanding applications.
2344 / 2347 / 294 / 811 / 812 series thrust bearings.
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|
Type No. |
Boundary dimensions |
Basic load ratings |
Mass |
Limiting speeds |
||||||||
|
mm |
kN |
kg |
r/min |
|||||||||
|
d |
D |
T |
C |
B |
rmin |
r1min |
Ca |
Coa |
Grease |
oil |
||
|
234928 |
140 |
190 |
60 |
30 |
15 |
1.5 |
1 |
91.5 |
365 |
4.2 |
2000 |
2800 |
|
234428 |
210 |
84 |
42 |
21 |
2.1 |
0.6 |
145 |
525 |
8.75 |
1800 |
2600 |
|
|
234930 |
150 |
210 |
72 |
36 |
18 |
2 |
1 |
116 |
465 |
6.6 |
1800 |
2400 |
|
234430 |
225 |
90 |
45 |
22.5 |
2.1 |
0.6 |
172 |
620 |
10.7 |
1700 |
2400 |
|
|
234932 |
160 |
220 |
72 |
36 |
18 |
2 |
1 |
118 |
490 |
7 |
1700 |
2400 |
|
234432 |
240 |
96 |
48 |
24 |
2.1 |
0.6 |
185 |
680 |
13 |
1600 |
2200 |
|
|
234934 |
170 |
230 |
72 |
36 |
18 |
2 |
1 |
120 |
520 |
7.35 |
1600 |
2200 |
|
234434 |
260 |
108 |
54 |
27 |
2.1 |
0.6 |
218 |
810 |
17.7 |
1500 |
2000 |
|
|
234936 |
180 |
250 |
84 |
42 |
21 |
2 |
1 |
158 |
655 |
10.7 |
1500 |
2000 |
|
234436 |
280 |
120 |
60 |
30 |
2.1 |
0.6 |
281 |
1020 |
23.4 |
1400 |
1900 |
|
|
234938 |
190 |
260 |
84 |
42 |
21 |
2 |
1 |
161 |
695 |
11 |
1400 |
2000 |
|
234438 |
290 |
120 |
60 |
30 |
2.1 |
0.6 |
285 |
1060 |
24.4 |
1300 |
1800 |
|
|
234940 |
200 |
280 |
96 |
48 |
24 |
2 |
1 |
204 |
855 |
15.7 |
1300 |
1800 |
|
234440 |
310 |
132 |
66 |
33 |
2.1 |
0.6 |
315 |
1180 |
31.5 |
1200 |
1700 |
|
|
234944 |
220 |
300 |
96 |
48 |
24 |
2 |
1 |
210 |
930 |
17 |
1200 |
1700 |
|
234444 |
340 |
144 |
72 |
36 |
3 |
1 |
360 |
1390 |
41 |
1100 |
1500 |
|
|
234948 |
240 |
320 |
96 |
48 |
24 |
2 |
1 |
213 |
980 |
18.3 |
1100 |
1500 |
|
234448 |
360 |
144 |
72 |
36 |
3 |
1 |
360 |
1450 |
44 |
1000 |
1400 |
|
|
234952 |
260 |
360 |
120 |
60 |
30 |
2 |
1 |
315 |
1390 |
30 |
1000 |
1400 |
|
234452 |
400 |
164 |
82 |
41 |
3 |
1.5 |
440 |
1890 |
64.5 |
900 |
1300 |
|
|
234956 |
280 |
380 |
120 |
60 |
30 |
2 |
1 |
320 |
1470 |
33.5 |
900 |
1300 |
|
234456 |
420 |
164 |
82 |
41 |
3 |
1.5 |
440 |
1960 |
68 |
850 |
1200 |
|
|
234960 |
300 |
420 |
144 |
72 |
36 |
3 |
1 |
395 |
1810 |
53 |
850 |
1200 |
|
234964 |
320 |
440 |
144 |
72 |
36 |
3 |
1 |
405 |
1920 |
55.5 |
800 |
1100 |
|
234968 |
340 |
460 |
144 |
72 |
36 |
3 |
1.1 |
415 |
2020 |
58.5 |
750 |
1000 |
|
234972 |
360 |
480 |
144 |
72 |
36 |
3 |
1.1 |
420 |
2130 |
61.5 |
710 |
950 |
|
234976 |
380 |
520 |
164 |
82 |
41 |
4 |
1.5 |
485 |
2560 |
87.5 |
630 |
900 |
|
234980 |
400 |
540 |
164 |
82 |
41 |
4 |
1.5 |
495 |
2700 |
91.5 |
600 |
850 |











