Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
Reference imageConfirm configuration by manufacturer part number.
Festo
123851
Coupling EAMC-40-66-12-20
The Festo 123851 industrial component features a size 40 design with a 12 mm diameter for holder 1, a 20 mm diameter for holder 2, and a nominal length of 66 mm. This RoHS compliant part delivers a transferable torque of 21 Nm, a mass moment of inertia of 42.3 kgmm², and a maximum rotational speed of 6500 rpm at a product weight of 139 g. Designed for any mounting position, it operates within an ambient and storage temperature range of -25 °C to 60 °C, relative air humidity from 0 to 95%, and adheres to VDMA24364-B2-L LABS conformity. Submit the exact part number, quantity, and application requirements to request a quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 123851
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 123851.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Diameter of holder 1
- 12 mm
- Diameter of holder 2
- 20 mm
- Size
- 40
- Nominal length
- 66 mm
- Mounting position
- Any
- Max. rotational speed
- 6500 rpm
- LABS (PWIS) conformity
- VDMA24364-B2-L
- Storage temperature
- -25 °C...60 °C
- Relative air humidity
- 0 - 95%
- Ambient temperature
- -25 °C...60 °C
- Mass moment of inertia
- 42.3 kgmm²
- Transferable torque
- 21 Nm
- Product weight
- 139 g
- Note on materials
- RoHS compliant
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 123851. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.