Size: 55*120*20mm
Weight: 1.43kg/piece
Material: chrome steel
Cage: molded polyamide
Precision: P4/ ABEC7 level
Lubrication: grease or oil
Limit Speed (Oil): 3000 RPM
Limit Speed (Grease): 2200 RPM
Category: single direction angular contact thrust ball bearing
55TAC 120B bearing belongs to single direction angular contact thrust ball bearing.
For this bearing model,
| Inner Diameter (mm): | 55 |
| Outer Diameter (mm): | 120 |
| Width (mm): | 20 |
| Weight (kg): | 1.43 |
| Bearing Material: | chrome steel |
| Cage: | molded polyamide |
| Contact Angle: | 60 degree |
| Precision Level: | P4/ABEC7 |
| Limit Speed (Oil): | 3000 |
| Limit Speed (Grease): | 2200 |
| Lubrication | grease or oil |
| Category: | angular contact thrust ball bearing |
| Interchange Numbers: | 55TAC120B, 55TAC 120B, 55 TAC 120B, 55TAC120BSUC10PN7B, BSB055120T, BS55120TN, etc |
The lock of the angular contact ball bearing is on the outer ring.
Generally, the inner and outer rings cannot be separated, and they can bear combined radial and axial loads and axial loads in one direction.
| Bearing Dimensions | NSK Model Number | FAG Model Number |
| 15*47*15 | 15TAC47B | BS1527 |
| 17*47*15 | 17TAC47B | BS1747 |
| 20*47*15 | 20TAC47B | BS2047 |
| 25*62*15 | 25TAC62B | BS2562 |
| 30*62*15 | 30TAC62B | BS3062 |
| 30*72*15 | 30TAC72B | BS3072 |
| 35*72*15 | 35TAC72B | BS3572 |
| 40*72*15 | 40TAC72B | BS4072 |
| 40*90*20 | 40TAC90B | BS4090 |
| 45*75*15 | 45TAC75B | BS4575 |
| 45*100*20 | 45TAC100B | BS45100 |
| 50*100*20 | 50TAC100B | BS50100 |
| 55*90*15 | 55TAC90B | BS5590 |
| 55*100*20 | 55TAC100B | BS55100 |
| 55*120*20 | 55TAC120B | BS55120 |
| 60*120*20 | 60TAC120B | BS60120 |
For common ball screw supporting bearings, we have large stock.
There are so many bearing models. Therefore, it’s impossible for us to upload all bearing models.
If you don’t find your bearing model numbers on our website, pls feel free to contact us !
Professional Bearing Solution Expert & Your Thrustworthy Partner
Jinan TOP Bearing Co., Ltd
Add: 1-2405-4, No. 1825, Hualong Rd., Licheng Dist, Jinan, Shandong, China
Mobile/WhatsApp/Wechat: +8615662712802
Email: supersales@jntopbearing.com
Comparison helps when dimensional fit is only part of the decision and load direction, sealing, clearance, speed, temperature, or repeat-order stability still need to be confirmed. Reviewing one or two nearby options early usually reduces sourcing mistakes later.
Buyers normally confirm the part reference, main dimensions, application, speed range, operating environment, sealing needs, and any packaging or marking requirements. That gives the supplier a cleaner basis for confirming availability and suitable alternatives.
A quick review of Angular Contact Ball Bearings, one more commercial destination, and one practical guide usually saves time. That combination helps separate simple replacement orders from jobs that still need fit or application review.
Because it makes later decisions faster. When sizing notes, application cues, and nearby options stay close to the product, engineering, purchasing, and maintenance teams can revisit the same logic without starting the review from zero.
1. Sea shipping for mass cargos (GW > 500KGS)
2. Air shipping (GW between 100KGS – 500 KGS)
3. Express, such as DHL, TNT, Fedex, UPS for small cargos ( GW < 100KGS)
4. If you have shipping agent in China, we can send goods to your shipping agent's warehouse
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Confirm the bearing number, bore size, outside diameter, width, seal or shield type, cage material, clearance, precision level, quantity, and application. These details help prevent a size match from becoming a performance mismatch.
Yes. Replacement and repeat orders are easier when the original marking, measured dimensions, photos, application, and quantity are available. If the marking is unclear, the team can start from the size and working condition.
This item is handled within the Angular Contact Ball Bearings family. Comparing the family page can help buyers review similar sizes, seal options, load direction, and related bearing choices before requesting a quote.
Price and lead time can change with quantity, stock availability, precision grade, clearance, material, cage, seal or shield type, lubrication, packaging, and whether the order needs standard matching or custom production.
Inspection can include material review, dimensional measurement, noise and vibration checks, surface and crack checks, visual review, and packaging inspection according to the confirmed order requirements.
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