The XRSA series of cross roller slewing bearings is designed to meet the demanding requirements for accuracy and stiffness in precision machinery and automation equipment.
| XRSA Series Cross Roller Slewing bearing | ||||||||||
| Light series External gear type | ||||||||||
| Basic model | Drawing number | Weight | Mounting dimensions | |||||||
| Kg | Da | di | Di | da | La | Li | ni | na | ||
| XRSA14.414 | 1 | 32 | 503.3 | 344 | 417 | 413 | 455 | 368 | 24 | 20 |
| XRSA14.544 | 2 | 44 | 640.3 | 474 | 547 | 543 | 585 | 498 | 32 | 28 |
| XRSA14.644 | 2 | 52 | 742.3 | 574 | 647 | 643 | 685 | 598 | 36 | 32 |
| XRSA14.744 | 2 | 59 | 838.1 | 674 | 747 | 743 | 785 | 698 | 40 | 36 |
| XRSA14.844 | 2 | 71 | 950.1 | 774 | 847 | 843 | 885 | 798 | 40 | 36 |
| XRSA14.944 | 2 | 77 | 1046.1 | 874 | 947 | 943 | 985 | 898 | 44 | 40 |
| XRSA14.1094 | 2 | 91 | 1198.1 | 1024 | 1097 | 1093 | 1135 | 1048 | 48 | 44 |
Basic model
Rotational accuracy
Internal clearance
Gear parameter
Corresponding type
A
B
C
D
Preload
do
m
z
INA
XRSA14.414
0.04
0.04
0.06
0.06
0.01-0.03
495
5
99
XSA140414N
XRSA14.544
0.04
0.04
0.07
0.06
0.01-0.03
630
6
105
XSA140544N
XRSA14.644
0.05
0.05
0.08
0.07
0.01-0.04
732
6
122
XSA140644N
XRSA14.744
0.05
0.05
0.08
0.08
0.01-0.04
828
6
138
XSA140744N
XRSA14.844
0.06
0.06
0.09
0.08
0.01-0.04
936
8
117
XSA140844N
XRSA14.944
0.06
0.06
0.09
0.09
0.01-0.05
1032
8
129
XSA140944N
XRSA14.1094
0.07
0.07
0.11
0.11
0.01-0.05
1184
8
148
XSA141094N
XRSA series cross roller slewing bearings belong to a kind of crossed cylindrical roller bearings, whose most remarkable feature is that the rollers are arranged alternately between the inner and outer rings. This design allows a single bearing to simultaneously support radial loads, axial loads and tilting moments.
Compared to conventional two-bearing combinations, XRSA series crossed roller slewing bearings are compact and easy to mount, while achieving higher rotational accuracy and stiffness. Their design allows them to save space and simplify the mechanical structure, which is a key component to realize the miniaturization and lightweighting of equipment.
High precision and rigidity: XRSA series bearings adopt crossed roller arrangement, which forms a line contact between rollers and raceways, effectively reducing elastic deformation and making them have extremely high rotational precision and rigidity. This is critical for equipment that requires precise positioning and stable operation, for example:
Industrial robot joints: Each joint of a robot requires high precision and high stiffness bearings to ensure precision and repeatability of movement.
CNC machine tool rotary tables: The rotary tables of CNC machine tools need to withstand heavy loads and achieve high-precision indexing, and XRSA series bearings are perfectly suited for the task.
Medical equipment: CT scanners, surgical robots and other medical equipment require high precision and reliability.
Precision Measuring Instruments: XRSA series bearings ensure that the measuring equipment has a very small runout error when rotating, ensuring the accuracy of the measurement results.
Semiconductor manufacturing equipment: In the semiconductor manufacturing process, a variety of automated equipment requires milliseconds of motion accuracy.
Easy installation and maintenance: XRSA series bearings are usually designed with integral or split structure for easy installation and adjustment. Meanwhile, its good sealing performance and durability also reduce the frequency and cost of routine maintenance.
Strong ability to withstand compound loads: a single XRSA series bearing can withstand loads from all directions, which makes it work stably under a variety of working conditions and avoids the complexity brought by the combination of multiple sets of bearings.
When choosing XRSA series bearings, you need to consider the following factors:
Load type and size: Define the radial, axial and tilting moment loads that your equipment needs to withstand, in order to select the model with the right load carrying capacity.
Precision requirements: According to the application scenario of the equipment, select the bearing that meets your precision level (e.g. P2, P4, P5).
Mounting space: XRSA series bearings are available in a variety of sizes and structural forms, so you need to choose according to the equipment's mounting space.
Environmental factors: Consider the temperature, humidity, dust and other factors of the working environment to choose the right type of seal and lubrication.
If you have any questions about XRSA series cross roller slewing bearings or need customized solutions, please feel free to contact us. We will provide you with professional selection advice and technical support to ensure that your equipment performance is optimal.
