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FB Double Pitch Sprockets FBN2050RB

FB Double Pitch Sprockets (Japanese Standard) FBN2050RB



Chain No.2050R (2052)  
Pitch (P) 31.75 mm (1-1/4inch)
Internal width (W) 9.53 mm  
Roller Dia. (Dr) 10.16 mm  
Tooth width (T) 8.7 mm  


Outside dia. 
Pitch dia. 
Hub a Weight 
Sprocket No. Finished bore 
BD BL Type efected teeth
116 102.75 73 28 8 1.10 FBN 
10 25,30,35,40
127 112.70 73 28 8 1.20 11 25,30,35,40
138 122.67 73 28 8 1.30 12 25,30,35,40
148 132.67 73 28 8 1.50 13 25,30,35,40
158 142.68 73 28 8 1.90 14 25,30,35,40
168 152.71 73 28 8 2.00 15 25,30,35,40
199 182.84 83 35 10 2.75 18 25,30,35,40
220 202.96 83 35 10 3.15 20 25,30,35,40


Finished Bore 

Finished bore 
18~22 6X2.8 6
24~30 8X3.3 8
32~38 10X3.3 8
40~42 12X3.3 8
45~50 14X3.8 10



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Product Quick Detail:

  • Standard and non-standard available
  • With high quality and competitive price
  • Prompt delivery
  • Packing as per customer’s demand.

We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.product materials available

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly

product finishing


product packages


Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shipment.

Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.

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