NTN Koyo NSK Brand BA180-4 BWSA 180*250*33mm Angular contact ball bearings Excavator Bearing
Bore Size: 230 mm
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$21.45/Piece | 1 Piece (Min. Order) |
Customization:
Customized logo(Min. Order: 10 Pieces)
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Customized packaging(Min. Order: 10 Pieces)
NTN Koyo NSK Brand BA180-4 BWSA 180*250*33mm Angular contact ball bearings Excavator Bearing
BA180-4 BWSA Excavator Bearing Specifications
The BA180-4 is a specific part number often used in the travel motors (the motors that drive the tracks) of excavators like those from Komatsu.
Type: Double-row angular contact ball bearing.
Purpose: It supports the planetary gears inside the final drive.
Key Feature: It is designed to handle axial loads (side-to-side force) and radial loads (up-and-down weight) simultaneously.
Material: Usually made of high-strength chrome steel to resist “pitting” or surface wear under extreme pressure.
|
Part NO.
|
ID(mm)
|
OD(mm)
|
H(mm)
|
|
184BA-2251
|
184
|
226
|
21
|
|
180BA-2256
|
180
|
225
|
22
|
|
AC5033
|
250
|
330
|
37
|
|
AC5836
|
289
|
355
|
34
|
|
AC463240
|
230
|
320
|
40
|
|
AC4615
|
230
|
300
|
35
|
|
AC4629
|
230
|
290
|
27
|
|
AC4531
|
225
|
315
|
36
|
|
AC4631
|
230
|
310
|
40
|
|
AC423040-1
|
210
|
300
|
40
|
|
AC4630
|
230
|
300
|
35
|
|
AC6037-1
|
300
|
370
|
34
|
|
AC523438-1
|
260
|
340
|
38
|
|
BA152-2306
|
152
|
230
|
26
|
|
BA222-1WSA
|
222
|
273
|
26
|
|
BA220-6SA
|
220
|
276
|
26
|
|
BA220-6WSA
|
220
|
276
|
26
|
|
BA240-3ASA
|
240
|
310
|
32
|
|
BA289-1A
|
289
|
255
|
34
|
|
BA260-3A
|
260
|
340
|
38
|
|
BA260-4A
|
260
|
340
|
38
|
|
BA200-10
|
200
|
280
|
38
|
|
BA230-7T12SA
|
230
|
300
|
35
|
|
BA4531
|
225
|
315
|
40
|
|
BA300-5A
|
300
|
380
|
40
|
|
BA180-4WSA
|
180
|
250
|
33
|
|
200BA27V-2
|
200
|
270
|
33
|
|
210BA29V
|
210
|
295
|
35
|
|
230BA27V2
|
230
|
300
|
35
|
|
BA280-2SA
|
280
|
370
|
40
|
|
BA300-4WSA
|
300
|
395
|
52
|
|
BD130-1SA
|
130
|
166
|
34
|
|
BA205-1A
|
205
|
295
|
40
|
|
BA246-2A
|
246
|
313
|
32
|
|
BA250-4A
|
250
|
330
|
37
|
|
BA290-3A
|
290
|
380
|
42
|
|
120BA16
|
120
|
165
|
22
|
|
180BN19
|
180
|
250
|
33
|
|
B-SF4454PX1
|
220
|
295
|
33
|
|
B-SF4444PX1
|
220
|
295
|
33
|
|
SF4815VPX1
|
240
|
310
|
34
|
|
SF4831PX1
|
240
|
310
|
33.4
|
|
SF4852PX1
|
240
|
310
|
33
|
|
SF4826PX1
|
240
|
310
|
33
|
|
SF3607PX1
|
180
|
225
|
15
|
|
SF2812PX1
|
140
|
175
|
17.5
|
|
SF3227PX1
|
160
|
200
|
20
|
|
SF3235PX1
|
160
|
200
|
20
|
|
SF4007PX1
|
200
|
250
|
25
|
|
SF4019PX1
|
200
|
260
|
30
|
|
SF4860PX1
|
240
|
320
|
38.6
|
|
SF6037-1
|
300
|
370
|
34
|
|
SF6015PX1
|
300
|
372
|
36
|
|
260BA355-2
|
260
|
355
|
44
|
|
CR4411PX1
|
220
|
290
|
32
|
|
CR6016PX1
|
300
|
380
|
38
|
|
BA230-7T12SA
|
230
|
300
|
35
|
|
LL639249/10
|
196.85
|
241.3
|
23.812
|
|
L540049/10
|
196.85
|
254
|
28.575
|
|
LM739749
|
196.85
|
257.175
|
39.688
|
|
544090/116
|
228.6
|
295.275
|
33.338
|
|
544091/118
|
231.775
|
300.038
|
33.338
|
|
L540048/10
|
200
|
254
|
28.575
|
|
561904P6X
|
120
|
170
|
27
|
|
36990/20
|
177.8
|
227.012
|
30.165
|
|
4T-T7FC065ST
|
65
|
130
|
37
|
|
4T-T7FC055ST
|
55
|
115
|
34
|
|
T2ED045-1
|
45
|
95
|
36
|
|
R196Z-4
|
196.85
|
241.3
|
23.812
|
|
AC563946AB
|
280
|
390
|
46
|
|
SF5235
|
260
|
330
|
35
|
|
AC4833
|
|||
|
HS05154
|
126
|
154
|
14
|
|
AC563946AB
|
280
|
390
|
46
|
|
BN220-1
|
220
|
280
|
28
|
|
BD130-16
|
130
|
166
|
40
|
|
310BN420
|
420
|
310
|
|
|
BA345-1
|
345
|
470
|
45
|
|
BA195-3A
|
195
|
280
|
36.5
|
|
BD155-3A
|
|||
|
BD155-4A
|
250
|
330
|
37
|
|
BD155-5A
|
165
|
210
|
54
|
|
BD155-6A
|
155
|
198
|
47
|
|
BA120-7
|
230
|
300
|
35
|
Shandong Tefule Bearing Co.,Ltd
is a professional bearing manufacturer and dealer in china.We have been engaged in bearing industry for 10 years and made international trade of bearing import and export for more than 8 years.We have our own brand “TFL” and applied ISO9001:2000 certificate for certification authority.We attend international bearing fairs, put in many B2B website and achieve many customers all over the world also bulid up good reputation from our customers.
Our company is specialized in ball bearing,roller bearing,housing units, wheel hub bearing,bearing parts and accessories, cross roller bearing.Also we can customize various large non-standard products such as the most competitive products according to customers’ demands.
is a professional bearing manufacturer and dealer in china.We have been engaged in bearing industry for 10 years and made international trade of bearing import and export for more than 8 years.We have our own brand “TFL” and applied ISO9001:2000 certificate for certification authority.We attend international bearing fairs, put in many B2B website and achieve many customers all over the world also bulid up good reputation from our customers.
Our company is specialized in ball bearing,roller bearing,housing units, wheel hub bearing,bearing parts and accessories, cross roller bearing.Also we can customize various large non-standard products such as the most competitive products according to customers’ demands.
FAQ1: Why are Angular Contact Ball Bearings used in travel motors?
In an excavator, the travel motor doesn’t just spin; it has to carry the entire weight of the machine while turning.
A. Unlike standard bearings, the “races” (the grooves the balls sit in) are offset. This allows the bearing to support forces coming from an angle.
B. They provide the high precision and rigidity needed so the excavator tracks don’t wobble or fail when climbing steep or rocky terrain.
In an excavator, the travel motor doesn’t just spin; it has to carry the entire weight of the machine while turning.
A. Unlike standard bearings, the “races” (the grooves the balls sit in) are offset. This allows the bearing to support forces coming from an angle.
B. They provide the high precision and rigidity needed so the excavator tracks don’t wobble or fail when climbing steep or rocky terrain.
FAQ2: How will the Excavator Swing Bearing Replacement be?
The swing bearing (or “slewing ring”) is the giant ring that allows the top of the excavator to rotate 360 degrees. Replacing it is a major job:
A. Preparation: Level the machine and extend the arm for balance.
B. Disconnection: Remove the hydraulic lines and the “swivel joint” (the part that lets oil flow while spinning).
C. Lifting: Use a crane to lift the “upper structure” (the cab and engine) off the “undercarriage” (the tracks).
D. Cleaning: Clean the mounting surfaces perfectly. Even a tiny piece of dirt can cause the new bearing to crack.
E. Installation: Bolt the new bearing down using a torque wrench in a “star pattern” to ensure even pressure.
The swing bearing (or “slewing ring”) is the giant ring that allows the top of the excavator to rotate 360 degrees. Replacing it is a major job:
A. Preparation: Level the machine and extend the arm for balance.
B. Disconnection: Remove the hydraulic lines and the “swivel joint” (the part that lets oil flow while spinning).
C. Lifting: Use a crane to lift the “upper structure” (the cab and engine) off the “undercarriage” (the tracks).
D. Cleaning: Clean the mounting surfaces perfectly. Even a tiny piece of dirt can cause the new bearing to crack.
E. Installation: Bolt the new bearing down using a torque wrench in a “star pattern” to ensure even pressure.
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