RHKING #40 Roller Chain Sprocket B Type 1/2" Bore Rust Prevention Hardened 9 Tooth

4.4 4.4 out of 5 stars | 183 ratings

Price: 14.99

Last update: 01-08-2025


About this item

✅Size :Roller Chain Sprocket 12.7mm (1/2") Pitch,9 Teeth,1/2" Bore Diameter, 0.125" Keyway with 2 Setscrews at 90 degrees,B Type.
✅Material:Sprocket is made of AISI 1045 Medium Carbon Steel, gear part of high temperature quenching heat treatment, high hardness, Harden Teeth at HRC38-42,wear resistance.
✅Feature:Sprocket tooth surface hardening treatment, sprocket overall blackening treatment, rust, corrosion resistance.
✅Use: Sprocket does not need lubrication, easy maintenance, can maintain good stable operation for a long time.
✅Package Content :1 x Roller Chain Sprocket (included 2pcs set screw).

Product Description

sprocket

#40 SPROCKET SPECIFICATIONS

Hub Style B Type
Teeth 9
Pitch Size 1/2"
Bore 1/2"
Keyway 1/8" x 1/16"
Material AISI 1045 Medium Carbon Steel
Chain #40 Chain
Total thickness 0.945"
Outside Diameter 1.693"
Hub Diameter 0.945"
sprocket
sprocket

Sprocket and chain must match each other to normal use, choose sprocket, need to consider the following factors:

1.style of sprocket

Type A (Flat sprocket, no hubs)

Type B (1 Hub)

Type C (2 Hubs)

2. Number of Teeth needed.

3. 3.Sprocket bore size.

If you choose the sprocket according to the chain, you also need to confirm the pitch of the chain and the diameter of the chain roller.

chain and sprocket

Induction Hardening

Sprocket is made of AISI 1045 Medium Carbon Steel, gear part of high temperature quenching heat treatment, high hardness, Harden Teeth at HRC38-42,wear resistance.

chain wheel

Blackening Treatment

sprocket overall blackening treatment, rust, corrosion resistance.

sprocket

Mark

Each sprocket will be marked with the number of teeth and the size of the inner hole for ease of use.

tooth sprocket

DIY manufacturing

Sprocket tooth surface induction hardening, the center position can continue processing, easy to meet the needs of specific scenes.

chain gear

Top reviews from the United States

  • Colin L
    5.0 out of 5 stars Great quality
    Reviewed in the United States on November 15, 2024
    Used this in a home beer can crusher, No problems yet and did my fair share of cans ☺️
  • Richard Z.
    5.0 out of 5 stars Great quality
    Reviewed in the United States on November 4, 2024
    Rebuilding old mini bikes everything fit perfect and the bike is back on the trail.
  • Theone
    5.0 out of 5 stars Strong
    Reviewed in the United States on November 6, 2024
    Used for a go cart sprocket held up well
  • Customer
    4.0 out of 5 stars Perfect fit
    Reviewed in the United States on June 13, 2024
    After reading other reviews, I am sorry that people had dimension and fitting problems. I guess I got lucky. My 1" bore sprocket fit on the shaft just right, the keyway fit the 1/4" key perfectly, #40 chain fits great, the worm screws (set screws) could have been a little longer with more thread, especially the one that goes deep inside the meat of the hub. Subtracting 1 star for that, sorry.
  • Terry Alexander
    5.0 out of 5 stars As described
    Reviewed in the United States on September 12, 2024
    Was exactly as described
  • Craig
    1.0 out of 5 stars Chain does not fit well with sprocket.
    Reviewed in the United States on June 23, 2024
    Chain just doesn’t fit well. Keeps trying to pop off.
  • Robert Russell
    5.0 out of 5 stars Great product
    Reviewed in the United States on June 28, 2024
    Works perfectly just what I needed
  • Bulldog viking
    3.0 out of 5 stars Not enough description.
    Reviewed in the United States on November 4, 2024
    This is #40B pitch sprocket. And it has 2 set screws but nowhere in the description does it mention that #40B is wider than regular #40 go-kart/mini bike chain. So I get to grind off 1/16 off Each side..

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