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Due to the heavy typhoon attacked to Japan on Sep/4/2018,
Items will be shipped from Narita International Airport(NRT) or Chubu Centrair International Airport(NGO),
which normally should have been shipped from Kansai International Airport(KIX).
It may cause delay on shipment. Sorry to have kept you waiting and thank you very much for your understandings.

  • Miniature Bearing Both Side Shielded Type
  • Miniature Bearing Both Side Shielded Type
  • Miniature Bearing Both Side Shielded Type

Miniature Bearing Both Side Shielded Type BR4/8ZZ

4.66 (178)
Package Qty.
Ship pack of
1.99 SGD
Shipped after 2018-09-25
Now we ship to...
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Item Feature
Standard Static Rating Load Cor (N)
Allowable Rotational Speed (min-1[r.p.m]) Oil Lubrication
Inside Diameter d (phi mm)
Outside Diameter D (phi mm)
This product is manufactured in Japanese standards. Please check the specification before you order.
Standard Dynamic Load Rating Cr (N)
Allowable Rotational Speed (min-1[r.p.m]) Grease Lubrication
Width B (mm)
JIS Grade
Customer Reviews
5 star 137
4 star 25
3 star 14
2 star 1
1 star 1
Review Rating: 4.66
178 Customer Reviews
The reviews are automatic translation.
Repair of ventilation fan
From Japan
On 2018-09-18 23:43:26
It was very helpful as it arrived the next day I ordered. Moreover, it is saved because it is less than half the famous manufacturer products. At the beginning of use I have no abnormal noise and started to run smoothly, but the lifespan is unknown for now.
This review is about item#36783223.
Model bearing motor bearings.
From Japan
On 2018-09-13 15:35:55
I found what I was looking for at a low price. Adhesive is easy because it is shielded.
This review is about item#11698462.
For DIY.
From Japan
On 2018-08-20 19:42:34
I am satisfied with the product. I am very satisfied that I can purchase from one.
This review is about item#8249272.
Bearings of self-made tape Rousseau
From Japan
On 2018-07-25 22:41:44
Even though it is cheap, it moves smoothly. Accuracy is also good so no complaints!
This review is about item#36783205.
Air conditioner outdoor machine for fan motor bearings
From Japan
On 2018-07-23 21:53:55
Due to aged deterioration from the air conditioner outdoor unit fan motor. When disassembling and trying to turn the bearing with your finger, there is a sense of incompatibility at some place and exchange (2 pieces). Smoothness revived, it became a clear sound.
This review is about item#9445222.
Maintenance of woodworking electric machines
From Japan
On 2018-07-13 18:23:00
Used for maintenance of woodworking motors Uses no problems until now, cheap early delivery.
This review is about item#8249272.
Repair of electric revolving shaft
From Japan
On 2018-07-01 19:26:12
It is used for electric revolving shaft of motor. For amateurs, it is difficult to purchase bearings, and because types are not available, the electric cannula that I thought about this time to destroy, thanks to Monotarau, I can revive it well and be able to reclaim it again and again.
This review is about item#9445231.
Oil pump belt holder
From Japan
On 2018-06-05 07:11:45
I put it on my own pulley and used it. I am glad that it became lighter than what I have ever had.
This review is about item#09445222.
I used it to make differential gear of the drive wheel.
From Japan
On 2018-05-30 15:20:32
It is a child's work. I cut PVC pipes for tap water, boiled them with hot water from the pot, and made them to beat in while hot. I think that it took quite a stress, but since the frame is solid, the deformation is not a problem. After that I let it get used to it for about 30 minutes and it got hot enough to touch it. Nevertheless there is no leakage of grease and it is turning smoothly.
This review is about item#8249272.
Used for power tool maintenance.
From Japan
On 2018-05-28 21:50:45
Grinders, rotating parts maintenance of the drill. After replacement the rotation of the tool was able to power up.
This review is about item#9445222.