Types of Ball Screw Support Units We Offer
JSM offers ISO, CE, and FDA-certified ball screw support units. Available in fixed-end, support-end, and integrated
drive-base types, they are designed for high rigidity, heavy-load capacity, and flexible installation in limited spaces.
Fixed Support Unit
We offer three types of fixed support units—BK square, EK raised, and FK round—suitable for ball screw diameters from φ6 to φ32. Their compact design saves installation space, and preloaded radial ball bearings enable direct assembly. Dedicated retaining nuts provide high-precision installation and prevent loosening, ensuring reliable long-term operation.
Floating Support Unit
There are three types of floating support units: BF square, EF raised, and FF round. Each features a support body, deep groove ball bearings with end seals, and a retaining ring. Bearings are pre-greased for stable accuracy, and flanges are available in round or square shapes to suit installation needs.
Integrated Drive Unit
MBK integrated drive units combine a bearing support system with built-in motor mounting, providing a compact and efficient solution for linear motion systems. High-quality angular contact or deep groove ball bearings precisely handle radial and axial loads. The integrated design allows seamless motor installation and simplifies ball screw support assembly.
JSM Ball Screw Bearing Support Series
Our ball screw bearing supports offer precise performance and easy installation, ensuring smooth setup for your
equipment.
-
![Linear Pillow Block]()
MLLinear Pillow BlockMatched with the Screw Nut, for Mechanical Connection and Support. -
![Lead Screw End Support]()
FLead Screw End SupportHousing + Bearing Unit For Floating End.
Axial Movement Allowed. -
![Ball Screw Fixed Side]()
KBall Screw Fixed SideContains seat, bearing, sealing ring, gland, etc., for fixed end installation. -
![Ball Screw Bearing Block]()
MBKBall Screw Bearing BlockSquare-Low Profile -
![Servo Motor Seat]()
MBKServo Motor SeatLong-Height -
![Ball Screw Linear Bearing Seat]()
MBKBall Screw Linear Bearing SeatNarrow Rail -
![Servo Motor Bracket]()
MBKServo Motor BracketLong-Width -
![Servo Motor Mounting Bracket]()
MBKServo Motor Mounting BracketStandard
Key Features of Ball Screw Bearing Support
Our standard ball screw bearing mounts are designed for ball screws and seamlessly fit mainstream servo and stepper motors. Structural optimization eliminates traditional alignment issues, making installation quick and commissioning effortless. Discover the key advantages of this product.
Durable Bearing Design
EK, FK, and BK bearing units use deep-groove ball bearings pre-filled with high-performance lithium soap grease. Specialized sealing washers ensure long-term, stable operation and minimize maintenance requirements.
Precision Angular Bearings
High-rigidity, low-torque 30° angular contact bearings in a DF (face-to-face) configuration are used to balance radial and axial loads. This design reduces vibration and noise while enhancing system stability and precision.
Support Unit Shapes
Ball screw support units are available in two series—square and round—allowing selection based on equipment type and installation requirements to suit a variety of applications.
Compact Design, Easy Installation
The support unit features a compact form for tight spaces, with preloaded bearings ready for direct assembly. This reduces assembly time and improves accuracy.
One-Stop Supply for Precision Linear Motion Components
As a linear motion solution provider, JSM supplies ball screw and bearing support assemblies and offers one-stop supply for linear guides, sliders, and ball screws, and bearing supports. We customize precision motion solutions for applications like machine tools, automated lines, electronics, medical devices, and transportation.
Why Choose JSM as Your Ball Screw Support Assembly Supplier
- R&D Capability
- Precision Production
- Quality Assurance
R&D Capability
JSM allocates 25% of its annual revenue to R&D, featuring an in-house modern laboratory outfitted with state-of-the-art experimental and testing equipment. We collaborate with universities to accelerate the transformation of technological achievements.
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Precision Production
JSM has its own 20,000m² factory equipped with advanced processing equipment for efficient and precise production, including 11 ultra-precision 3-axis grinders and 41 precision machining centers. The factory produces 1.5 million sliders and 800,000 meters of linear guideways annually.
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Quality Assurance
We have established a professional team of over ten members to supervise the entire workflow from raw material procurement to finished product delivery. This team ensures product consistency, stability, and compliance with international export standards.
Learn more >>FAQ
Q: How to select ball screw bearing mounts?
A: To select appropriate bearing supports, you need to consider key parameters including screw diameter (to match support specifications), maximum load (axial/radial, referenced against bearing rated load), operating speed, accuracy requirements, and installation space (flange size and length).
Q: Why is the ball screw end support overheating?
A: This may be due to insufficient lubrication, excessively tight bearing installation, overload beyond the rated capacity, or significant coaxiality deviation.
Q: How to troubleshoot accuracy degradation?
A: To address accuracy issues, inspect bearing wear using a vibration detector, check the clearance between the screw and nut, and verify the tightness of the support seat.
Q: What should be done if abnormal noise occurs during post-installation operation?
A: Possible causes include coaxiality deviation, insufficient lubrication, bearing wear, or loose installation — these should be systematically checked and recalibrated as needed.
Q: How to perform daily maintenance on a ball screw support seat?
A: Daily maintenance includes regularly checking for loose fasteners, monitoring operating temperature (normal temperature rise ≤ 30°C; shut down for inspection if abnormal), and cleaning surface dust to prevent foreign matter from entering the bearing cavity.
Q: Do you have the test and audit service?
A: Yes, we can assist in getting the designated test report for products and the designated factory audit report.
Q: Do you provide sample ? Is it free?
A: If the sample is of low value, we will provide the free sample with freight collect. But for some high-value samples, we need to collect the sample charge.
Q: Can you do OEM and ODM?
A: Yes, OEM and ODM are both acceptable. Material, color, and style are customizable. We will provide advice on minimum order quantities (MOQs) after further discussion.
Q: How long does customization take?
A: We guarantee sample prototyping and delivery within 14 days, ensuring you can proceed with further testing quickly.
Q: What's your term of the delivery?
A: Our ordinary delivery term is FOB SHANGHAI. We also accept EXW, CIF, DDP, etc. We'll offer you the shipping charges, and you can choose the one that is the most convenient and effective for you.
Q: What's your after-sales service policy?
A: We provide a one-year quality warranty. Any quality issues will be resolved to ensure customer satisfaction.
As one of the most professional ball screw bearing support manufacturers and suppliers in China, we're featured by quality products and low price. Please rest assured to buy ball screw bearing support made in China here from our factory.
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Power Your Linear Motion System with JSM!
From precision linear guides to high-performance ball screws, we provide tailored solutions to optimize your machinery. Contact our experts at your convenience. We're 24/7 online.