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The 29400 Series (models 29424 through 29436) comprises heavy-duty spherical roller thrust bearings engineered to support massive axial loads while simultaneously accommodating moderate radial loads. Featuring asymmetrical barrel rollers and a self-aligning spherical housing washer, these bearings effortlessly absorb shaft deflection and mounting misalignments. Ranging from 120 mm to 180 mm in internal diameter, they are essential for heavy industrial equipment such as crushers, extruders, and marine propeller shafts. Contact us for OEM manufacturing and competitive B2B wholesale pricing.
The 29400 Series Spherical Roller Thrust Bearing is the ultimate solution for heavy engineering applications requiring extreme axial rigidity. Unlike standard thrust bearings, the rollers in this series are arranged at a steep angle to the bearing axis, allowing them to carry heavy axial (thrust) loads in one direction, while also supporting a limited amount of radial load. The spherical raceway in the housing washer enables the bearing to self-align, perfectly compensating for shaft bending or initial housing misalignment without creating edge stresses on the rollers.
Use the dimensional data below to specify the correct bearing for your machine shafts. (Note: Standard dimensions corrected for engineering accuracy based on ISO standards).
Model Number | Internal Diameter (d) | External Diameter (D) | Thickness/Height (H) |
|---|---|---|---|
29424 | 120 mm | 250 mm (Note: Corrected from 350mm) | 78 mm |
29426 | 130 mm | 270 mm | 85 mm |
29428 | 140 mm | 280 mm | 85 mm |
29430 | 150 mm | 300 mm | 90 mm |
29432 | 160 mm | 320 mm | 95 mm |
29434 | 170 mm | 340 mm | 103 mm |
29436 | 180 mm | 360 mm | 109 mm |
29438 | 190 mm | 380 mm | 115 mm |
29440 | 200 mm | 400 mm | 122 mm |
[Data referenced from standard 29400 series sizing ]
Designed for continuous operation in harsh environments, this series delivers exceptional value to OEMs and maintenance facilities:
Separable Assembly: The shaft washer (containing the cage and rollers) and the housing washer are separable, simplifying the installation and inspection process on massive machine shafts.
High Wear Resistance: Forged from premium GCr15 Chrome Steel, ensuring excellent fatigue life under constant heavy vibration and shock loads.
Self-Aligning Capability: Protects expensive machinery from damage caused by shaft deflection under heavy loads, ensuring smooth and consistent power transmission.
Due to their massive load capacities, the 29424 to 29436 size range is typically utilized in extreme heavy-duty environments:
Oil & Gas / Mining: Rotary drilling tables, heavy crushers, and material handling conveyors.
Manufacturing: Plastic and rubber injection extruders, and heavy industrial stamping presses.
Marine & Power: Ship propeller thrust blocks and hydroelectric turbine generators.
We are a direct manufacturer equipped to handle high-volume B2B orders with strict quality control.
Cage Customization: Bearings can be supplied with stamped steel cages (E suffix) or machined brass cages (M suffix) depending on your vibration requirements.
OEM Branding: Laser marking of your company logo and specific part numbers available.
Payment & Delivery: Flexible payment terms (T/T, L/C) and secure, heavy-duty wooden crate packaging for safe ocean freight.
Q1: Can these bearings be used at high speeds?
A: Spherical roller thrust bearings are generally designed for low to moderate speeds due to their massive size and the sliding friction inherent in their design. They require copious oil lubrication for optimal cooling if pushed to their limiting speeds.
Q2: Can I use grease lubrication for the 29400 series?
A: Yes, for low-speed applications or oscillating movements, high-quality extreme pressure (EP) grease is acceptable. However, for continuous or higher-speed operations, an oil bath or circulating oil system is highly recommended to dissipate heat.
Q3: The table mentions ZZ/2RZ; do these bearings have seals?
A: No, standard spherical roller thrust bearings do not come with integral seals (like ZZ or 2RS). The sealing must be incorporated into the external design of your machine's housing. The ZZ/2RZ designation in your initial chart was likely a clerical error from a different bearing category.
The 29400 Series Spherical Roller Thrust Bearing is the ultimate solution for heavy engineering applications requiring extreme axial rigidity. Unlike standard thrust bearings, the rollers in this series are arranged at a steep angle to the bearing axis, allowing them to carry heavy axial (thrust) loads in one direction, while also supporting a limited amount of radial load. The spherical raceway in the housing washer enables the bearing to self-align, perfectly compensating for shaft bending or initial housing misalignment without creating edge stresses on the rollers.
Use the dimensional data below to specify the correct bearing for your machine shafts. (Note: Standard dimensions corrected for engineering accuracy based on ISO standards).
Model Number | Internal Diameter (d) | External Diameter (D) | Thickness/Height (H) |
|---|---|---|---|
29424 | 120 mm | 250 mm (Note: Corrected from 350mm) | 78 mm |
29426 | 130 mm | 270 mm | 85 mm |
29428 | 140 mm | 280 mm | 85 mm |
29430 | 150 mm | 300 mm | 90 mm |
29432 | 160 mm | 320 mm | 95 mm |
29434 | 170 mm | 340 mm | 103 mm |
29436 | 180 mm | 360 mm | 109 mm |
29438 | 190 mm | 380 mm | 115 mm |
29440 | 200 mm | 400 mm | 122 mm |
[Data referenced from standard 29400 series sizing ]
Designed for continuous operation in harsh environments, this series delivers exceptional value to OEMs and maintenance facilities:
Separable Assembly: The shaft washer (containing the cage and rollers) and the housing washer are separable, simplifying the installation and inspection process on massive machine shafts.
High Wear Resistance: Forged from premium GCr15 Chrome Steel, ensuring excellent fatigue life under constant heavy vibration and shock loads.
Self-Aligning Capability: Protects expensive machinery from damage caused by shaft deflection under heavy loads, ensuring smooth and consistent power transmission.
Due to their massive load capacities, the 29424 to 29436 size range is typically utilized in extreme heavy-duty environments:
Oil & Gas / Mining: Rotary drilling tables, heavy crushers, and material handling conveyors.
Manufacturing: Plastic and rubber injection extruders, and heavy industrial stamping presses.
Marine & Power: Ship propeller thrust blocks and hydroelectric turbine generators.
We are a direct manufacturer equipped to handle high-volume B2B orders with strict quality control.
Cage Customization: Bearings can be supplied with stamped steel cages (E suffix) or machined brass cages (M suffix) depending on your vibration requirements.
OEM Branding: Laser marking of your company logo and specific part numbers available.
Payment & Delivery: Flexible payment terms (T/T, L/C) and secure, heavy-duty wooden crate packaging for safe ocean freight.
Q1: Can these bearings be used at high speeds?
A: Spherical roller thrust bearings are generally designed for low to moderate speeds due to their massive size and the sliding friction inherent in their design. They require copious oil lubrication for optimal cooling if pushed to their limiting speeds.
Q2: Can I use grease lubrication for the 29400 series?
A: Yes, for low-speed applications or oscillating movements, high-quality extreme pressure (EP) grease is acceptable. However, for continuous or higher-speed operations, an oil bath or circulating oil system is highly recommended to dissipate heat.
Q3: The table mentions ZZ/2RZ; do these bearings have seals?
A: No, standard spherical roller thrust bearings do not come with integral seals (like ZZ or 2RS). The sealing must be incorporated into the external design of your machine's housing. The ZZ/2RZ designation in your initial chart was likely a clerical error from a different bearing category.
