Mechanical Hardware

51204 Thrust Bearing 20x40x14 mm ABEC-1 ( 2 PCS ) Axial 51204 Thrust Ball Bearings 8204



Thrust ball bearings are separable bearings. The single-acting thrust ball bearing consists of a shaft washer, a housing washer and a ball set with cage. The double-acting type consists of a shaft washer (centre washer), two housing washers and two ball sets with cages. Thrust ball bearings can be applied for high axial loads and low to medium speeds. However, they cannot take radial loads. They are sensitive to angular deflection and characterized by extremely rigid guidance in axial direction. Depending on speed, a minimum load is necessary to avoid sliding movements of the ball set, which are caused by centrifugal forces. To compensate for misalignments of the shaft, bearings with spherical housing washers and support washers should be used.

The ball cage is a formed carbon steel design. Note that one washed is ID piloted and the other is OD piloted. Please review the technical information for the correct mounting guidelines for this bearing.

Attributes: Values: Part Number 51204 Bearing Bore Dia (d) 20 mm Outer Dia (D) 40 mm Height (H) 14 mm Bearing Type with grooved raceway(s) are available Lubrication Type No Grease, some Antirust Oil Structure Inner and outer ring + cage balls Material 52100 Chrome steel Radius (min) (rs) 0.6 mm Static Load Ratings(Cor) 37700 N Dynamic Load Rating(Cr) 22100 N Max Speed (Oil)(x1000 rpm) 6 Outer Dia. Pilot (D1) 40 mm Bore Dia. Clearance (d1) 22 mm Weight (g) (grams) 78 Note ABEC Grades 1, Also, the equivalent ISO classes Quantity 1 lot = 2 pcs bearings Important Reminder: - The picture is for reference only, the actual product structure is identical, the cage steel ball quantities will differ. – Thrust ball bearings are designed to handle axial loads only. – Thrust ball bearings consist of ball, retainer and both shaft and housing washers which contain grooves for the ball.


When you place an order, please choose a shipping method and pay for the order including the shipping fee. We will send the items within 3 days once your payment is completed.

We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected. Please note that buyers are responsible for all additional customs fees, brokerage fees, duties, and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.

The shipping cost does not include any import taxes, and buyers are responsible for customs duties.


We do our best to serve our customers the best that we can.

We will refund you if you return the items within 15 days of your receipt of the items for any reason. However, the buyer should make sure that the items returned are in their original conditions. If the items are damaged or lost when they are returned, the buyer will be responsible for such damage or loss, and we will not give the buyer a full refund. The buyer should try to file a claim with the logistic company to recover the cost of damage or loss.

The buyer will be responsible for the shipping fees to return the items.

Warranty & Maintenance:

We offer the 1-month free replacement. Buyers may request for a replacement within 15 days from your receipt of the product. The buyer should return the product in the original conditions to us and should bear the shipping costs for return.

We also provide 12-month free maintenance. The buyer should return the product in the original conditions to us and should bear the shipping costs for return. If any part is required to be replaced, the buyer should also pay for the costs of the parts to be replaced.

Before returning the items, please confirm the return address and the logistics method with us. After you give the items to the logistic company, please send us the tracking number. As soon as we receive the items, we will repair or exchange them ASAP.


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  • Coatings: Antirust oil
  • Model Number: 51204
  • Brand Name: FUSHI
  • Structure: Deep Groove
  • Torque Capacity: 20x40x14 mm
  • Material: 52100 Chrome Steel

  • Package Size: 20cm x 15cm x 10cm (7.87in x 5.91in x 3.94in)
  • Package Weight: 0.28kg (0.62lb.)
  • Unit Type: lot (2 pieces/lot)