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Address

Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
Canada

PHIDGETS Inc.

Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
Canada
+1 403 282-7335

#40 Chain Idler Sprocket 12mm Bore with Spacers

ID: TRM4161_1

Free spinning sprocket for tensioning.

$8.00

Quantity Available: 146

Qty Price
5 $7.68
10 $7.36

Idler sprockets are standard sprockets with an integrated bearing that causes them to spin freely. This is useful for adding tension a chain system without putting additional load on the motor. They can also be used to route chains around so they're not in the way of other parts of the system.

Features

  • Free-spinning idler for adding support or tension to a belt system
  • Fits onto a 12mm shaft
  • For use with #40 size chain
  • Includes two mounting spacers

Assembly

Accessories

The included mounting spacers can be slid onto a bolt, one on each side of the sprocket.

The spacer only contacts the inner bore of the sprocket, so it can be securely mounted while still allowing the sprocket to spin freely.


Guides

Chain

This sprocket is compatible with series #40 chain. The amount of chain required depends on the desired distance between your two sprockets; for installation details see the Rotary Motion Guide.

Product
Part Number Price
TRM4221_0
#40 Roller Chain
$4.45/Meter
TRM4223_0
#40 Roller Chain Link Kit
$1.50

Rotary Shaft

If you're building a rotary transmission system of any kind, chances are you'll need some rotary shaft. Here's a list of rotary shaft compatible with this sprocket:

Product Physical Properties
Part Number Price Diameter
TRM4016_0
12mm Precision Ground Rotary Shaft (no keyway)
$6.50/Meter 12 mm
TRM4001_0
12mm Precision Ground Rotary Shaft (w/ keyway)
$45.00/Meter 12 mm

Product Specifications

Physical Properties
Inner Diameter 12 mm
Number of Teeth 13
Sprocket Series # 40
Customs Information
Canadian HS Export Code 8483.90.00
American HTS Import Code 8483.90.10.50
Country of Origin CN (China)

Documents

Product Physical Properties
Part Number Price Inner Diameter Number of Teeth Sprocket Series
TRM4161_1
#40 Chain Idler Sprocket 12mm Bore with Spacers
$8.00 12 mm 13 # 40
TRM4144_0
#40 Chain Sprocket with 12mm Bore and 9 Teeth
$4.25 12 mm 9 # 40
TRM4145_0
#40 Chain Sprocket with 12mm Bore and 14 Teeth
$4.50 12 mm 14 # 40
TRM4146_0
#40 Chain Sprocket with 12mm Bore and 20 Teeth
$7.00 12 mm 20 # 40
TRM4147_0
#40 Chain Sprocket with 0.5" Bore and 9 Teeth
$4.00 12 9 # 40
TRM4148_0
#40 Chain Sprocket with 14mm Bore and 9 Teeth
$4.50 14 mm 9 # 40
TRM4149_0
#40 Chain Sprocket with 14mm Bore and 20 Teeth
$6.50 14 mm 20 # 40
TRM4150_0
#40 Chain Sprocket with 5/8" Bore and 9 Teeth
$4.50 58 9 # 40
TRM4151_0
#40 Chain Sprocket with 17mm Bore and 20 Teeth
$7.00 17 mm 20 # 40
TRM4152_0
#40 Chain Sprocket with 17mm Bore and 40 Teeth
$20.00 17 mm 40 # 40
TRM4153_0
#40 Chain Sprocket with 19mm Bore and 20 Teeth
$7.00 19 mm 20 # 40
TRM4154_0
#40 Chain Sprocket with 24mm Bore and 20 Teeth
$7.00 24 mm 20 # 40
TRM4155_0
#40 Chain Sprocket with 25mm Bore and 20 Teeth
$7.00 25 mm 20 # 40
TRM4156_0
#40 Chain Sprocket with 25mm Bore and 40 Teeth
$17.50 25 mm 40 # 40
TRM4157_0
#40 Chain Sprocket with 25mm Bore and 60 Teeth
$27.00 25 mm 60 # 40