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Designed for compact space design of small turntable bearings, set axial force, radial force and overturning moment bearing in one, to ensure the smooth operation of precision equipment, can be ordered on a large scale.
42CrMo
Material
55HRC
Hardness
P5 level
Accuracy
The section height is only 60% of the standard model, which effectively solves the problem of limited installation space, reduces the overall weight of the equipment by 30%, and perfectly adapts to lightweight mechanical arms and automatic turntables.
The surface hardness of the raceway is treated to 55 to 62HRC, the depth of the effective hardening layer is more than 3mm, the wear resistance is significantly improved, and the life is extended by 2 times under the continuous working condition of 30 revolutions per minute.
The gear machining accuracy is above level 7, and the tooth side clearance is controlled between 0.03 and 0.08mm, which eliminates the reverse backlash and ensures that the positioning accuracy is within 0.1 degrees.
Optimize the raceway curvature and the contact angle of the rolling body, the starting friction torque is less than 5 Nm, even a micro servo motor can be easily driven, reducing energy consumption and improving response speed.
With the four-point contact ball structure, a single bearing can bear 30kN axial load and 2kNm overturning moment at the same time, without the need for combined installation, greatly reducing procurement costs.
Equipped with anti-aging nitrile rubber double lip sealing ring, closely fit the rotating surface, effectively prevent dust intrusion and grease leakage, adapt to the dust of the larger industrial workshop environment.
| Model Specifications | Raceway center diameter (mm) | Outer diameter (mm) | Internal diameter (mm) | Height (mm) | Number of mounting holes (inner/outer) | Rated static load (kN) | Rated dynamic load (kN) | Weight (kg) |
| STB-020 | 200 | 280 | 120 | 30 | 12 / 12 | 45 | 28 | 6.5 |
| STB-030 | 315 | 402 | 228 | 40 | 16 / 16 | 72 | 41 | 13.0 |
| STB-040 | 400 | 496 | 304 | 45 | 20 / 20 | 110 | 65 | 21.0 |
| STB-050 | 500 | 608 | 392 | 50 | 24 / 24 | 165 | 92 | 35.0 |
| STB-060 | 630 | 742 | 518 | 55 | 28 / 28 | 215 | 118 | 48.0 |
Compared with the split bearing combination on the market, the small turntable bearing has a significant structural integration advantage. Traditional solutions usually require two sets of radial bearings with one set of thrust bearings to achieve the same force effect, while this product combines the three force modes into one through the four-point contact ball design. This not only reduces the number of parts by 60%, but also avoids the complicated preload adjustment process, which greatly simplifies the supply chain management and assembly process.
In terms of precision retention, this product is forged with 42CrMo alloy steel as a whole. Compared with 50Mn steel commonly used in similar products, the fatigue strength is increased by 20%. Especially in the cantilever load, the high rigidity of the raceway can effectively resist the elastic deformation, ensure that the gear meshing accuracy does not decrease after long-term use, and avoid the problem of equipment shaking caused by the increase of the gap.
Aiming at the problem of small internal space of small medical equipment, the problem that large load components cannot be packed into a compact chassis is solved by thin-walled design without sacrificing the bearing capacity.
Aiming at the problem of time-consuming and labor-consuming assembly of traditional bearing sets, the installation time is shortened from 2 hours to 15 minutes by using flange-type mounting hole design and directly fixed by high-strength bolts.
In view of the problem of gear tooth collapse caused by frequent forward and reverse rotation of automatic production line, the hidden danger of gear fracture failure under impact load is solved by optimizing the tooth root strength and heat treatment process.
It is suitable for the purchase of rotating mechanism of CT machine and MRI bed. This group requires extremely high rotation smoothness and low noise characteristics to ensure that the image is clear and does not disturb the patient.
Suitable for supply chain supervisors of mechanical arm joints and AGV trolley steering modules. They pay attention to the light weight and high torque ratio of the products to extend the endurance of the robot and improve the grasping load.
Suitable for purchasing manager of solar panel automatic tracking bracket. This scenario requires that the bearings have excellent weather resistance and anti-overturning ability, and can maintain accurate positioning under severe outdoor wind loads.
Suitable for equipment maintenance personnel of small rotary filling stations and labeling machines. They need bearings with dust seals to prevent powder or liquid from contaminating the raceway and ensure continuous production.
Before installation, burrs and oil stains on the surface of the mounting support must be cleaned to ensure that the flatness error is controlled within 0.05mm to prevent the bearing from running stuck due to uneven base surface.
High-strength bolts of grade 10.9 or above must be used and tightened three times in accordance with the star-shaped cross sequence. It is strictly forbidden to tighten in accordance with the circumferential sequence to avoid internal stress deformation.
When installing the pinion, adjust the backlash at the high point of the ring gear to ensure that the clearance value is between 0.03 and 0.1mm, and turn it for one cycle to check for seizure.
Lithium-based grease shall be replenished through the grease nozzle every 100 hours of operation until new grease overflows from the sealing lip. The oil filling period shall be shortened to 50 hours under high temperature or high humidity environment.
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Designed for compact space design of small turntable bearings, set axial force, radial force and overturning moment bearing in one, to ensure the smooth operation of precision equipment, can be ordered on a large scale.
Material
42CrMo
Hardness
55HRC
Accuracy
P5 level
The section height is only 60% of the standard model, which effectively solves the problem of limited installation space, reduces the overall weight of the equipment by 30%, and perfectly adapts to lightweight mechanical arms and automatic turntables.
The surface hardness of the raceway is treated to 55 to 62HRC, the depth of the effective hardening layer is more than 3mm, the wear resistance is significantly improved, and the life is extended by 2 times under the continuous working condition of 30 revolutions per minute.
The gear machining accuracy is above level 7, and the tooth side clearance is controlled between 0.03 and 0.08mm, which eliminates the reverse backlash and ensures that the positioning accuracy is within 0.1 degrees.
Optimize the raceway curvature and the contact angle of the rolling body, the starting friction torque is less than 5 Nm, even a micro servo motor can be easily driven, reducing energy consumption and improving response speed.
With the four-point contact ball structure, a single bearing can bear 30kN axial load and 2kNm overturning moment at the same time, without the need for combined installation, greatly reducing procurement costs.
Equipped with anti-aging nitrile rubber double lip sealing ring, closely fit the rotating surface, effectively prevent dust intrusion and grease leakage, adapt to the dust of the larger industrial workshop environment.
| Model Specifications | Raceway center diameter (mm) | Outer diameter (mm) | Internal diameter (mm) | Height (mm) | Number of mounting holes (inner/outer) | Rated static load (kN) | Rated dynamic load (kN) | Weight (kg) |
| STB-020 | 200 | 280 | 120 | 30 | 12 / 12 | 45 | 28 | 6.5 |
| STB-030 | 315 | 402 | 228 | 40 | 16 / 16 | 72 | 41 | 13.0 |
| STB-040 | 400 | 496 | 304 | 45 | 20 / 20 | 110 | 65 | 21.0 |
| STB-050 | 500 | 608 | 392 | 50 | 24 / 24 | 165 | 92 | 35.0 |
| STB-060 | 630 | 742 | 518 | 55 | 28 / 28 | 215 | 118 | 48.0 |
Aiming at the problem of small internal space of small medical equipment, the problem that large load components cannot be packed into a compact chassis is solved by thin-walled design without sacrificing the bearing capacity.
Aiming at the problem of time-consuming and labor-consuming assembly of traditional bearing sets, the installation time is shortened from 2 hours to 15 minutes by using flange-type mounting hole design and directly fixed by high-strength bolts.
In view of the problem of gear tooth collapse caused by frequent forward and reverse rotation of automatic production line, the hidden danger of gear fracture failure under impact load is solved by optimizing the tooth root strength and heat treatment process.
It is suitable for the purchase of rotating mechanism of CT machine and MRI bed. This group requires extremely high rotation smoothness and low noise characteristics to ensure that the image is clear and does not disturb the patient.
Suitable for supply chain supervisors of mechanical arm joints and AGV trolley steering modules. They pay attention to the light weight and high torque ratio of the products to extend the endurance of the robot and improve the grasping load.
Suitable for purchasing manager of solar panel automatic tracking bracket. This scenario requires that the bearings have excellent weather resistance and anti-overturning ability, and can maintain accurate positioning under severe outdoor wind loads.
Suitable for equipment maintenance personnel of small rotary filling stations and labeling machines. They need bearings with dust seals to prevent powder or liquid from contaminating the raceway and ensure continuous production.
Before installation, burrs and oil stains on the surface of the mounting support must be cleaned to ensure that the flatness error is controlled within 0.05mm to prevent the bearing from running stuck due to uneven base surface.
High-strength bolts of grade 10.9 or above must be used and tightened three times in accordance with the star-shaped cross sequence. It is strictly forbidden to tighten in accordance with the circumferential sequence to avoid internal stress deformation.
When installing the pinion, adjust the backlash at the high point of the ring gear to ensure that the clearance value is between 0.03 and 0.1mm, and turn it for one cycle to check for seizure.
Lithium-based grease shall be replenished through the grease nozzle every 100 hours of operation until new grease overflows from the sealing lip. The oil filling period shall be shortened to 50 hours under high temperature or high humidity environment.
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