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Product DetailSpecification/Dimensions
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type
- C-ROBAC
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Outer Dia. D(Ø)
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Shaft (Bore) Dia. d(mm)
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L Dimension(mm)
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CAD
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- 3D
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Flat Belt Pulleys Medium Length (C-ROBAC30-N12-40)
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MiSUMi Economy
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Product Detail
Feature of Flat Belt Pulleys 1: The arc-shaped specification can effectively restrain belt deviation
Feature of Flat Belt Pulleys 2: Coaxial degree of less than ⊙0.05mm, effectively reducing the belt vibration when running
Feature of Flat Belt Pulleys 3: Locking threaded hole is changed to 120°, and tightening torque is increased by 11.8%.
■ Keyway size of Flat Belt Pulleys
[Pulley Material] Aluminum Alloy
[Surface Treatment] Clear Anodized
Product Overview of Flat Belt Pulleys
Usually, Flat Belt Pulleys and flat belts are widely used in mechanisms design for transmitting rotational power generated by motors.
Driving and transmission are realized through the friction fit between flat-belt pulleys and flat belts.
Driving and transmission are realized through the friction fit between flat-belt pulleys and flat belts.
Product Feature of Flat Belt Pulleys
| Type |  Material |  Surface Treatment |
| Arc Type | ||
| C-ROBAC | Aluminum | Clear Anodized |
Feature of Flat Belt Pulleys 1: The arc-shaped specification can effectively restrain belt deviation
Feature of Flat Belt Pulleys 2: Coaxial degree of less than ⊙0.05mm, effectively reducing the belt vibration when running
Feature of Flat Belt Pulleys 3: Locking threaded hole is changed to 120°, and tightening torque is increased by 11.8%.
Dimensional Drawing of Flat Belt Pulleys
■ Keyway size of Flat Belt Pulleys
| Nominal model | dH7 | bJS9 | t Tolerance |  | ||||
| N8 | 8 | +0.015 0 | 3 | ±0.0125 | 1.4 | +0.1 0 | ||
| N10 | 10 | |||||||
| N12 | 12 | +0.018 0 | 4 | ±0.0150 | 1.8 | |||
| N15 | 15 | 5 | 2.3 | |||||
| N20 | 20 | +0.021 0 | 6 | 2.8 | ||||
| N30 | 30 | 8 | ±0.0180 | 3.3 | +0.2 0 | |||
| N40 | 40 | +0.025 0 | 12 | ±0.0215 | ||||
[Surface Treatment] Clear Anodized
Usage Method of Flat Belt Pulleys
■ Intend Use for of Flat Belt Pulleys
| Usage Method Example Drawing | Use Instructions for Flat-belt Pulleys | |
 | The workpiece can be transmitted by the combined use of flat-belt pulleys, flat-belt idlers and flat belts. The flat-belt idlers can also play the role of tensioning the belt. | |
Example Use of Flat Belt Pulleys
■ Mechanism name of Flat Belt Pulleys
2-row flat belt conveyor
Mechanism function of Flat Belt Pulleys
Conveyor used for pallet transportation of equipment in automatic conveying and manual operation
■ Function of Flat Belt Pulleys
The drive flat-belt pulleys and the driven flat belt idler drive the flat belt to carry out the conveying operation.
2-row flat belt conveyor
Mechanism function of Flat Belt Pulleys
Conveyor used for pallet transportation of equipment in automatic conveying and manual operation
■ Function of Flat Belt Pulleys
The drive flat-belt pulleys and the driven flat belt idler drive the flat belt to carry out the conveying operation.
Related Industries of Flat Belt Pulleys
| Smart phone | Medical | Electronic & Electrical Appliances | ||
 |  |  | ||
| Automotive | Robotics | Lithium battery | ||
 |  |  |
Related Products of Flat Belt Pulleys
| Flat-belt idlers, Width (T), 6 to 32 mm | Flat Belts for General Use | High Torque Timing Pulleys S2M Type | ||
 |  |  | ||
| Typical model: HBG15-6 | Typical model: HBLT350-4.23 | Typical model: HTPA48S2M040-B-N10 | ||
| Advantages: short delivery time, multiple types | Advantage: custom size | Advantages: short delivery time, multiple types |
Specification Table of Flat Belt Pulleys
Please order after selecting part number and parameters according to the selection steps 
to 
.
■ Dimension Specification Table of Flat Belt Pulleys
to 
. | Part Number (Type· D) | － |  d | － | L | |
| C-ROBAC15 | － | N8 | － | 25 |
■ Dimension Specification Table of Flat Belt Pulleys
| Part Number | D | dH7 | L | H | Key Length | M | ℓ | F | ||||
| Type | Keyway Hole + Threaded Hole | K | ||||||||||
| Arc Type C-ROBAC | 15 | N8 | 25 | 30 | 40 | 50 | 0.8 | 25 | M3 | 3.5 | - | |
| 20 | N8 | 25 | 30 | 40 | 50 | 25 | - | |||||
| 30 | N12 | 30 | 40 | 50 | 60 | 30 | 31 | |||||
| 40 | N12 | 30 | 40 | 50 | 60 | 30 | 41 | |||||
| 50 | N20 | 50 | 60 | 30 | M5 | 4 | 51 | |||||
Specification Table
Please order after selecting part number and parameters according to the selection steps 
to 
.
■ Dimension Specification Table
to 
. | Part Number (Type· D) | － |  d | － | L | |
| C-ROBAC15 | － | N8 | － | 25 |
■ Dimension Specification Table
| Part Number | D | dH7 | L | H | Key Length | M | ℓ | F | ||||
| Type | Keyway Hole + Threaded Hole | K | ||||||||||
| Arc Type C-ROBAC | 15 | N8 | 25 | 30 | 40 | 50 | 0.8 | 25 | M3 | 3.5 | - | |
| 20 | N8 | 25 | 30 | 40 | 50 | 25 | - | |||||
| 30 | N12 | 30 | 40 | 50 | 60 | 30 | 31 | |||||
| 40 | N12 | 30 | 40 | 50 | 60 | 30 | 41 | |||||
| 50 | N20 | 50 | 60 | 30 | M5 | 4 | 51 | |||||
Part Number
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Basic Information
| Type | Pulleys | With or w/o Flange | No Flange | Shape | Crowned |
|---|---|---|---|---|---|
| Surface Urethane | Urethane Not Provided | Material | Aluminum Alloy | Surface Treatment | Clear Anodize |
| Shaft Hole Specifications | New JIS Keyway + Tap |
Please check the type/dimensions/specifications of the part C-ROBAC30-N12-40 in the Flat Belt Pulleys Medium Length series.
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: Is there a concentricity standard for the flat belt pulley?
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Answer:
Economy series flat belt pulley and idler coaxiality is
- Question: Can the flat belt idler bearing be disassembled.
- Answer: According to different products, there are two types of MISUMI flat belt idlers: bearing press-fit type and bearing removal type. Therefore, during the design process, please design and use after the customer confirms the characteristics of the product.
- Question: What precision bearings are used for flat belt idlers?
- Answer: MISUMI flat belt idlers use radial bearings of accuracy grade 0. For specific dimensions of the bearings, please refer to Economy series Bearing Small diameter ball.
Product variants
| Part Number |
|---|
| C-ROBAC15-N8-50 |
| C-ROBAC20-N8-25 |
| C-ROBAC20-N8-30 |
| C-ROBAC30-N12-50 |
| C-ROBAC30-N12-60 |
| C-ROBAC40-N12-30 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Outer Dia. D (Ø) | Shaft (Bore) Dia. d (mm) | L Dimension (mm) |
|---|---|---|---|---|---|---|---|---|
₹ 1,132.31 | 1 Piece(s) | Available | 10 Day(s) | 10 | 15 | 8 | 50 | |
₹ 1,155.75 | 1 Piece(s) | Available | 10 Day(s) | 10 | 20 | 8 | 25 | |
₹ 1,192.98 | 1 Piece(s) | Available | 10 Day(s) | 10 | 20 | 8 | 30 | |
₹ 1,584.69 | 1 Piece(s) | Available | 10 Day(s) | 10 | 30 | 12 | 50 | |
₹ 1,522.52 | 1 Piece(s) | Available | 10 Day(s) | 10 | 30 | 12 | 60 | |
₹ 1,707.50 | 1 Piece(s) | Available | 10 Day(s) | 10 | 40 | 12 | 30 |
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