Name: #40 Chain Sprocket with 12mm Bore and 20 Teeth
Brand: Phidgets
SKU: TRM4146_0
Availability: InStock

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PHIDGETS Inc.

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

#40 Chain Sprocket with 12mm Bore and 20 Teeth

SKU: TRM4146_0

ⓘ

$7.00

Quantity Available: 169

Qty	Price
5	$6.72
10	$6.44

Hardened steel sprocket for half inch (1/2") roller chain. It has a 12mm bore with keyway, set screws and key.

Features

Fits onto a 12mm shaft
4mm keyway for a solid connection to keyed shaft
Tightens on with two 2mm hex screws
For use with #40 size chain

Guides

Rotary Motion Guide

Rotary systems involve rotating mechanical parts such as motors, sprockets, and pulleys. Learn the basics about rotary motion here.

Product Specifications

Physical Properties
Inner Diameter	12 mm
Keyway Width	4 mm
Number of Teeth	20
Sprocket Series	# 40
Hex Key Size Required	2 mm
Customs Information
Canadian HS Export Code	8483.90.00
American HTS Import Code	8483.90.10.50
Country of Origin	CN (China)

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

Stepper Motors

Stepper motors have high torque and precise position control. This sprocket can connect to the main shaft of the following stepper motors:

Product		Physical Properties		Motor Properties	Electrical Properties	Gearbox Properties
Part Number	Price	Shaft Diameter	Mounting Plate Size	Rated Torque	Recommended Voltage	Gearbox Type	Gear Ratio
3332_0 NEMA23 - 1.8 Degree - 2.8A Stepper - 4.25:1 Gearbox	$70.00	12 mm	NEMA - 23	46.6 kg·cm	24 V DC	Planetary	4 ¹⁄₄ : 1
3333_0 NEMA23 - 1.8 Degree - 2.8A Stepper - 15:1 Gearbox	$72.00	12 mm	NEMA - 23	150 kg·cm	24 V DC	Planetary	15 ³⁄₁₀ : 1
3334_0 NEMA23 - 1.8 Degree - 2.8A Stepper - 77:1 Gearbox	$74.00	12 mm	NEMA - 23	240 kg·cm	24 V DC	Planetary	76 ⁴⁹⁄₆₄ : 1
3335_0 NEMA34 - 1.8 Degree - 4A Stepper - Gearless	$60.00	12 mm	NEMA - 34	30 kg·cm	30 V DC	—	—

Brushless DC Motors

Brushless DC motors combine smooth rotation with accurate position control. This sprocket can connect to the following BLDC Motors:

Product		Physical Properties	Motor Properties
Part Number	Price	Shaft Diameter	Rated Torque	Rated Speed
DCM4107_1 NEMA23 - Brushless DC Motor - 4.3:1 Gearbox	$84.00	12 mm	10.2 kg·cm	930 RPM
DCM4108_1 NEMA23 - Brushless DC Motor - 15:1 Gearbox	$86.00	12 mm	33.7 kg·cm	250 RPM
DCM4109_1 NEMA23 - Brushless DC Motor - 23:1 Gearbox	$88.00	12 mm	51 kg·cm	170 RPM
DCM4110_1 NEMA23 - Brushless Motor with 47:1 Gearbox	$95.00	12 mm	112.2 kg·cm	82 RPM
DCM4111_0 NEMA23 - Brushless DC Motor - 96:1 Gearbox	$98.00	12 mm	214.1 kg·cm	41 RPM

DC Motors

DC motors are the simplest and most common option for rotary motion in many projects. This sprocket can connect to the main shaft of the following DC motors:

Product		Physical Properties	Motor Properties	Electrical Properties	Gearbox Specifications
Part Number	Price	Shaft Diameter	Rated Torque	Rated Voltage	Gearbox Type	Gear Ratio
3269_3 24V/5.1Kg-cm/588RPM 4.25:1 DC Gear Motor	$69.00	12 mm	4.4 kg·cm	24 V DC	Planetary	4 ¹⁄₄ : 1
DCM4001_0 24V/12.2Kg-cm/772RPM/4.25:1 DC Gear Motor	$80.00	12 mm	12.2 kg·cm	24 V DC	Planetary	4 ¹⁄₄ : 1
3270_2 24V/14.2Kg-cm/192RPM 13:1 DC Gear Motor	$66.00	12 mm	13.3 kg·cm	24 V DC	Planetary	12 ²⁴⁄₂₅ : 1
DCM4002_0 24V/45Kg-cm/182RPM/18:1 DC Gear Motor	$82.00	12 mm	47 kg·cm	24 V DC	Planetary	18 : 1
3272_2 24V/50.9Kg-cm/53RPM 47:1 DC Gear Motor	$72.00	12 mm	43.8 kg·cm	24 V DC	Planetary	46 ⁸²⁄₁₂₅ : 1
DCM4003_0 24V/153Kg-cm/50RPM/65:1 DC Gear Motor	$84.00	12 mm	153 kg·cm	24 V DC	Planetary	65 : 1
3273_2 24V/82.6Kg-cm/33RPM 76:1 DC Gear Motor	$72.00	12 mm	71.4 kg·cm	24 V DC	Planetary	76 ⁴⁹⁄₆₄ : 1
3274_2 24V/173.3Kg-cm/15RPM 168:1 DC Gear Motor	$76.00	12 mm	136.6 kg·cm	24 V DC	Planetary	167 ⁶⁰¹⁄₆₂₅ : 1

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	¹⁄₂″	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	⁵⁄₈″	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