NACHI 29326E Spherical Roller Thrust Bearing 130x225x58 mm
Available
The NACHI 29326E is a spherical roller thrust bearing in the 293 series (E design). It measures 130 x 225 x 58 mm (bore x outer diameter x height) and carries a basic dynamic axial load rating of 665,000 N and a basic static axial load rating of 2,420,000 N. Limiting speed is 1,800 rpm on oil; no grease speed is given for the E design. The mass is 9.45 kg.
The housing-washer raceway is spherical, so the bearing is self-aligning. With a contact angle of about 45° it carries axial load together with a small to moderate radial load, and it takes high loads at low to moderate speeds.
Where this product is used
- Crane hooks and lifting gear
- Injection moulding machines
- Large machines with heavy axial load
- Vertical shaft drives and large gearboxes
- Heavy axial load positions at low to moderate speed
Features
- Spherical housing-washer raceway: the bearing is self-aligning, with permissible misalignment of about 2° under general service conditions
- Contact angle of about 45°, so it carries axial load together with a small to moderate radial load
- High load capacity at low to moderate speeds: Ca 665 kN, Coa 2,420 kN
- Oil lubrication: limiting speed 1,800 rpm (no grease speed is given for the E design)
- Minimum axial load Coa / 1000 = 2,420 N must always be applied
Key specifications
| Specification | Detail |
|---|---|
| Model | 29326E |
| Type | Spherical roller thrust bearing (E design) |
| Series | 293 |
| Bore d | 130 mm |
| Outer diameter D | 225 mm |
| Height T | 58 mm |
| Chamfer r (min) | 2.1 mm |
| Shaft washer diameter d1 | 215 mm |
| Housing washer diameter D1 | 171 mm |
| Shaft shoulder diameter da (min) | 170 mm |
| Housing shoulder diameter Da (max) | 195 mm |
| Fillet radius ra (max) | 2 mm |
| Basic dynamic axial load rating Ca | 665,000 N |
| Basic static axial load rating Coa | 2,420,000 N |
| Limiting speed, grease | Not rated for the E design |
| Limiting speed, oil | 1,800 rpm |
| Minimum axial load Fa min | 2420 N (Coa / 1000) |
| Contact angle | Approximately 45° |
| Permissible misalignment | About 2° under general service conditions |
| Mass | 9.45 kg |
Selecting the right option
The E design is rated for oil lubrication only: no grease limiting speed is given. Choose it where the housing has an oil supply.
Check the loads against Ca and Coa and apply a suitable safety factor. The bearing suits high axial load with some radial load; where radial load is the main load, a radial bearing is the better choice.
Fitting and use
Axial load comes first. The dynamic equivalent axial load is Pa = Fa + 1.2Fr and the static equivalent is Poa = Fa + 2.7Fr, and these apply only while Fr / Fa is 0.55 or less. The static safety factor So must be over 4.
To avoid sliding damage between the rollers and the raceway, the bearing must always carry a minimum axial load Fa min of at least Coa / 1000 (N).
Oil lubrication is advised rather than grease, because of the many sliding surfaces (cage to guide sleeve, roller ends to rib). To get the benefit of the aligning ability (about 2° under general service conditions), leave clearance for the parts around the bearing.
Related products
More from the NACHI spherical roller thrust range: NACHI spherical roller thrust bearings, 60 to 140 mm bore (5 sizes), NACHI 29324EX spherical roller thrust bearing, 120 x 210 x 54 mm and NACHI 29424E spherical roller thrust bearing, 120 x 250 x 78 mm. For radial and combined loads with misalignment, see the NACHI spherical roller bearings (radial type).
Resources
Couldn't load pickup availability
Secure Checkout. We do not store credit card details
