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Embout à rotule FLURO EA 30 – M30x2 mâle, droite, palier acier/acier (uniball)
- Embout à rotule FLURO EA 30 : filetage mâle M30x2 à droite, alésage de 30 mm, capacité de charge 124,0 kN stat. / 62,0 kN dyn., palier acier/acier. 1 pièce.
FLURO EA 30 Rod End – M30x2 Right-Hand Male Thread, 30 mm Bore, Steel/Steel Bearing
FLURO EA 30 is a rod end (also referred to as a rose joint, heim joint, spherical rod end, or threaded uniball) featuring an M30x2 right-hand external (male) thread and a 30 mm ball bore diameter. It supports a static load of up to 124.0 kN and a dynamic load of up to 62.0 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.
In size 30, the standard version of the EA series features an M30x2 fine-pitch thread (2 mm pitch) rather than a standard M30 thread with a 3.5 mm coarse pitch. Therefore, pay attention to the thread pitch when selecting a nut or an internally threaded rod.
Key Specifications at a Glance
- Manufacturer: FLURO-Gelenklager GmbH (Germany)
- Manufacturer designation: EA 30
- Type: external (male) thread rod end, with steel/steel bearing
- Thread: M30x2 (fine pitch, 2 mm pitch), right-hand
- Ball bore diameter: 30 mm
- Static load rating: 124.0 kN
- Dynamic load rating: 62.0 kN
- Sliding pair: steel / steel
- Lubrication: requires lubrication, DIN 71412 grease nipple
- Standard: DIN ISO 12240-4, dimension series E
- Sold as: 1 piece
Technical Specifications – FLURO EA 30
| Parameter | Value (Metric) | Value (Imperial) |
|---|---|---|
| Thread (G) | M30x2 male, right-hand, fine pitch | – |
| Ball bore diameter (d) | 30 mm | 1.18" |
| Outer head diameter (D) | 73 mm | 2.87" |
| Ball / inner ring width (W) | 22 mm | 0.87" |
| Housing / outer ring width (T) | 19 mm | 0.75" |
| Center of bore to end of shank (L) | 110 mm | 4.33" |
| Overall length | 146.5 mm | 5.77" |
| Thread length (GM) | 65 mm | 2.56" |
| Tilt angle | 6° in each direction (12° total) | – |
| Maximum static load (C0) | 124.0 kN | 27876 lbf |
| Maximum dynamic load (C) | 62.0 kN | 13938 lbf |
| Weight | 890 g | 1.96 lb |
| Lubrication | requires lubrication, DIN 71412 grease nipple | – |
Construction and Materials
Housing (body with threaded shank)
The size 30 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 features a hydraulic grease nipple conforming to DIN 71412, through which grease is replenished.
Applications
EA series rod ends are used in linkages that transmit high loads with alternating direction while accommodating angular misalignment. Typical applications for the M30x2 size include:
- hydraulic cylinders,
- lever systems and linkages in machinery,
- construction, agricultural, and industrial machinery,
- heavy 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 30 mm diameter bolt or pin passes through the ball bore.
- Secure the threaded shank using an M30x2 (fine-pitch) jam nut – a standard M30 nut with a 3.5 mm pitch will not fit.
- The threaded shank should be engaged to a minimum depth of 1.5 times the thread diameter, i.e., at least 45 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 30 rod end have?
The FLURO EA 30 rod end has an M30x2 external (male), fine-pitch, right-hand thread. The thread length is 65 mm.
What bolt size fits the EA 30 bore?
The ball bore diameter is 30 mm, so it accommodates a 30 mm diameter bolt or pin.
What load can the FLURO EA 30 handle?
The maximum static load rating is 124.0 kN (27876 lbf), and the dynamic load rating is 62.0 kN (13938 lbf).
Does the EA 30 rod end require lubrication?
Yes. The rod end operates on a steel/steel bearing that requires lubrication. The rod end features a hydraulic grease nipple conforming to DIN 71412, through which grease is replenished.
What is the difference between EA 30 and EA 30 D?
EA 30 has a steel/steel bearing that requires lubrication, whereas EA 30 D has a maintenance-free bearing. The mounting dimensions of both versions are identical.
What is the difference between EA 30 and EAL 30?
EA 30 has a right-hand thread, whereas EAL 30 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 30 rod end?
The ball tilts 6° in each direction, for a total of 12°.
What materials is the FLURO EA 30 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 30 rod end.