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Embout à rotule FLURO EA 12 – M12 mâle, droite, palier acier/acier (uniball)
- Embout à rotule FLURO EA 12 : filetage mâle M12x1,75 à droite, alésage de 12 mm, capacité de charge 29,0 kN stat. / 10,8 kN dyn., palier acier/acier. 1 pièce.
FLURO EA 12 Rod End – M12 Right-Hand Male Thread, 12 mm Bore, Steel/Steel Bearing
FLURO EA 12 is a rod end (also referred to as a rose joint, heim joint, spherical rod end, or threaded uniball) featuring an M12 right-hand external (male) thread and a 12 mm ball bore diameter. It supports a static load of up to 29.0 kN and a dynamic load of up to 10.8 kN. It operates on a steel/steel spherical plain bearing that requires lubrication.
This rod end belongs to the EA series manufactured by the German company FLURO-Gelenklager GmbH, built to dimension series E in accordance with DIN ISO 12240-4. This series is designed for high loads with alternating direction and for connections with limited installation space – series E rod ends are narrower than series K rod ends.
Key Specifications at a Glance
- Manufacturer: FLURO-Gelenklager GmbH (Germany)
- Manufacturer designation: EA 12
- Type: external (male) thread rod end, with steel/steel bearing
- Thread: M12 (1.75 mm pitch), right-hand
- Ball bore diameter: 12 mm
- Static load rating: 29.0 kN
- Dynamic load rating: 10.8 kN
- Sliding pair: steel / steel
- Lubrication: requires lubrication, without grease nipple
- Standard: DIN ISO 12240-4, dimension series E
- Sold as: 1 piece
Technical Specifications – FLURO EA 12
| Parameter | Value (Metric) | Value (Imperial) |
|---|---|---|
| Thread (G) | M12 male, right-hand | – |
| Ball bore diameter (d) | 12 mm | 0.47" |
| Outer head diameter (D) | 34 mm | 1.34" |
| Ball / inner ring width (W) | 10 mm | 0.39" |
| Housing / outer ring width (T) | 8 mm | 0.31" |
| Center of bore to end of shank (L) | 54 mm | 2.13" |
| Overall length | 71 mm | 2.80" |
| Thread length (GM) | 28 mm | 1.10" |
| Tilt angle | 11° in each direction (22° total) | – |
| Maximum static load (C0) | 29.0 kN | 6519 lbf |
| Maximum dynamic load (C) | 10.8 kN | 2428 lbf |
| Weight | 86 g | 0.19 lb |
| Lubrication | requires lubrication, without grease nipple | – |
Construction and Materials
Housing (body with threaded shank)
The size 12 housing is forged from C45 (AISI 1045) quenched and tempered steel and zinc-plated for corrosion protection. In the EA series, housings up to and including size 10 are machined from free-cutting steel, while from size 12 upwards they are forged from C45 quenched and tempered steel.
Spherical plain bearing
A steel/steel spherical plain bearing of type GE..E operates inside the housing. This sliding pair handles high loads with alternating direction well, but requires lubrication.
Lubrication
The rod end does not have a grease nipple – in the EA series, grease nipples are only fitted from size 20 upwards.
Applications
EA series rod ends are used in linkages that transmit high loads with alternating direction while accommodating angular misalignment. Typical applications for the M12 size include:
- pneumatic and hydraulic cylinders,
- lever systems and linkages in machinery,
- rods and links transmitting alternating loads,
- tubular structures, tie rods, and bracing,
- connections with limited installation width.
Selecting a rod end for a specific joint must account for actual operating loads and an appropriate safety factor – this is the responsibility of the design engineer or installer.
Installation Guidelines
- A 12 mm (M12) bolt or pin passes through the ball bore.
- Secure the threaded shank using an M12 jam nut.
- The threaded shank should be engaged to a minimum depth of 1.5 times the thread diameter, i.e., at least 18 mm.
- The steel/steel bearing requires lubrication – do not operate it dry.
- To utilize the full tilt angle, use conical misalignment spacers on both sides of the ball.
Frequently Asked Questions
What thread does the FLURO EA 12 rod end have?
The FLURO EA 12 rod end has an M12 external (male), right-hand thread. The thread length is 28 mm.
What bolt size fits the EA 12 bore?
The ball bore diameter is 12 mm, so it accommodates an M12 (12 mm) bolt or pin.
What load can the FLURO EA 12 handle?
The maximum static load rating is 29.0 kN (6519 lbf), and the dynamic load rating is 10.8 kN (2428 lbf).
Does the EA 12 rod end require lubrication?
Yes. The rod end operates on a steel/steel bearing that requires lubrication. The rod end does not have a grease nipple – in the EA series, grease nipples are only fitted from size 20 upwards.
What is the difference between EA 12 and EA 12 D?
EA 12 has a steel/steel bearing that requires lubrication, whereas EA 12 D has a maintenance-free bearing. The mounting dimensions of both versions are identical.
What is the difference between EA 12 and EAL 12?
EA 12 has a right-hand thread, whereas EAL 12 has a left-hand thread. Using a pair of right-hand and left-hand rod ends on a single linkage rod allows you to adjust its length without disassembly.
What is the tilt angle of the EA 12 rod end?
The ball tilts 11° in each direction, for a total of 22°.
What materials is the FLURO EA 12 made of?
The housing is forged from C45 (AISI 1045) quenched and tempered steel and zinc-plated, and a steel/steel spherical plain bearing of type GE..E operates inside the housing.
Is the price for a single piece?
Yes, the price is for 1 piece of the FLURO EA 12 rod end.