What Is a Ball Screw and How Does It Work?

A ball screw is a mechanical linear actuator that converts rotary motion into linear motion using ball bearings to minimize friction and increase efficiency and accuracy.

What Types of Ball Screws Do You Offer?

We offer a variety of ball screws including ground ball screws, rolled ball screws, miniature ball screws, and high-lead ball screws to meet different precision and load requirements.

How Do I Choose the Right Ball Screw for My Application?

Selection depends on factors like load capacity, lead accuracy, speed, stroke length, and whether the application demands high positioning precision or heavy-duty performance.

What Is the Difference Between Ground and Rolled Ball Screws?

Ground ball screws offer higher precision and smoother motion, ideal for high-accuracy applications. Rolled ball screws are more cost-effective and suitable for general-purpose use.

What Maintenance Is Required for a Ball Screw?

Regular lubrication is essential. Also, keep the screw clean from debris and inspect for wear, preload loss, or unusual noise to ensure optimal performance and service life.

THK Ball Screw: Premium Alternatives from YIDI Motion – Cut Costs 30% with ISO-Certified Quality & Fast USA Delivery

Struggling with high THK ball screw prices and long lead times? YIDI Motion delivers THK-compatible ball screws engineered for USA manufacturers, ensuring precision motion for CNC machines and automation – at unbeatable value.

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Why THK Ball Screws Are Costing You More Than You Think

As a purchasing manager in the USA manufacturing sector, you're under pressure to optimize ROI while maintaining precision in linear motion systems. THK ball screws are industry gold standards, but they come with hidden costs that erode your margins.

High Prices: Original THK ball screws average $500-$2000 per unit, 30-50% higher than alternatives due to brand premiums. Your budget stretches thin.
Supply Chain Delays: Lead times of 8-12 weeks from Japan disrupt production schedules, especially with global shipping volatility.
Excessive Shipping Costs: Import duties and freight from Asia add 15-25% to landed costs for USA buyers.
Quality Variability in Knockoffs: Cheap Chinese options fail prematurely, leading to 37% higher downtime per industry reports from AMT.
Limited Customization: THK's standard specs don't always fit OEM needs, forcing redesigns.
After-Sales Hassles: Warranty claims across borders take months. Ready for a better option?

Discover how YIDI solves these – scroll down

YIDI Motion: Your Reliable THK Ball Screw Supplier for USA Markets

Established in 2020, HEBEI YIDI IMPORT AND EXPORT TRADING CO., LTD. (YIDI Motion) is a powerhouse factory with 100+ employees, 30% senior technicians, and equipment from Germany and Japan. We specialize in THK ball screw alternatives that match or exceed performance – at 30% lower costs. Exported to 50+ countries including the USA, our OEM/ODM services deliver high-speed production and global compliance.

Core Advantages (5 Key Wins for Your Operations)

Powerful Factory Capacity: 10,000+ units/month, ensuring stock availability and 7-14 day delivery to USA ports.
Quality Assurance: Matches THK C5-C10 accuracy with rigorous testing – 99.9% defect-free rate.
OEM/ODM Design: Custom leads, preloads, and nuts tailored to your CNC or robotic specs.
High-Speed Delivery: Direct from Hebei factory to your door, slashing shipping costs by 40%.
One-Stop Linear Motion: Pair with our linear guides, modules, and bearings for complete assemblies.

THK Ball Screw Technical Parameters: Precision Matched by YIDI

Our THK ball screw equivalents cover rolled and ground types, ideal for high-load, high-speed applications. Below is a comprehensive specs table for easy comparison – optimized for CNC mills, lathes, 3D printers, semiconductor equipment, and medical devices. (Accuracy per ISO 3408/JIS B1192 standards.)

Model (THK Equivalent)	Nominal Dia. (mm)	Lead (mm)	Accuracy Class	Dyn. Load Rating Ca (kN)	Stat. Load C0 (kN)	Max Length (mm)	Weight (kg/m)
SFS10-5 (SFS1010 equiv.)	10	5	C7	12.5	20.1	3000	0.35
SFS16-5 (SFS1610)	16	5	C5	22.4	37.2	4500	0.82
SFS20-5 (SFS2005)	20	5	C3	31.5	55.4	6000	1.25
SFS25-10 (SFS2510)	25	10	C5	41.2	72.8	6500	2.10
SFS32-10 (SFS3210)	32	10	C0	64.5	112.0	8000	3.45
SFS40-10 (SFS4010)	40	10	C3	89.2	156.3	9000	5.60
SFS50-10 (SFS5010)	50	10	C5	120.5	215.4	10000	8.20

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Key Performance Characteristics:

Friction Coefficient: Just 0.003 – 1/1500th of sliding screws, enabling speeds up to 100m/min.
Preload Options: Light (0.5C), Medium (1C), Heavy (1.5C) for zero backlash in precision apps.
Material: SCM415H alloy steel, hardened to HRC58-62, with optional stainless for cleanrooms.
Nut Types: Flange (BK/BF), Cylinder (BK), Sealed for dust protection (IP65 equiv.).
Life Expectancy: L10 life >50,000km at rated load, per DIN/ISO calculations.
Temperature Range: -10°C to +80°C standard; high-temp variants to 150°C.

Application Scenarios: In CNC machining, our SFS25-10 replaces THK for Z-axis feeds, boosting rigidity by 20%. Robotics use SFS16-5 for joint actuators. Case Study: A Michigan automaker switched to YIDI, reducing costs 32% and downtime 25% over 12 months. YIDI Motion Factory Line Producing Ball Screws

Need custom specs? Ask in FAQ or contact us.

FAQ: THK Ball Screw Supplier for USA Buyers

1. Are YIDI ball screws direct THK replacements?

Yes, dimensionally interchangeable with THK SFS/BK series. Same mounting, preload, and accuracy classes C0-C10.

2. What’s the procurement process for USA customers?

1. Quote request via form/WhatsApp. 2. Sample order (free for qualified). 3. Bulk production (7-14 days). 4. DHL/FedEx or sea to your port.

End Machined Ball Screw

3. Do you offer customization?

Full OEM/ODM: Custom diameters 8-120mm, leads 1-50mm, lengths to 12m. Engineering support included.

4. Logistics and payment methods?

FOB/CIF to USA ports. T/T, L/C, PayPal. Duties handled via compliant packaging.

5. What’s your after-sales service?

24-month warranty, lifetime tech support. Returns within 30 days, free replacements for defects.

6. THK ball screw price comparison?

YIDI: 30-50% less. E.g., SFS20-5: $180 vs THK $320.

7. Can I get free samples?

Yes, for bulk commitments – shipped free to USA.

Real User Reviews: Praise from USA Customers

"Outstanding THK alternative! Our Haas CNC runs smoother than ever. Saved $15K on 50 units." – Mike R., Texas Fabricator ★★★★★

"Precision C3 grade matched THK perfectly. Delivery in 9 days – game-changer for prototyping." – Lisa K., California Robotics Firm ★★★★★

"Custom 40mm screw arrived flawless. Quality beats competitors, price crushes THK." – Tom S., Ohio Automation Mgr ★★★★★

"Integrated seamlessly into our 3D printers. Low friction, high speed – highly recommend!" – Emma W., Florida Maker ★★★★★

Act Now: Limited Stock on Popular THK Equivalents – Free Samples for First 20 USA Inquiries This Month

100% money-back guarantee. No risk – just superior performance and savings.

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YIDI Motion | 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China

About the Author: Dr. Alex Chen, PhD

Dr. Alex Chen is a 20-year veteran in linear motion engineering, former THK R&D lead in USA operations (2010-2018), now Chief Technical Advisor at YIDI Motion. Author of "Precision Ball Screws for Automation" (2026 SME Press). Holds patents in high-speed nut designs.