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.

15mm Linear Guide Rail – Compact Precision for Tight Automation Builds

HGH15 / HGR15 Rails from Factory Direct | OEM Ready | Global Shipping

15mm linear guide rail in CNC application

Need reliable motion in small spaces? Talk to our engineers for custom 15mm setups. Get Factory Quote →

By Adam Li, Export Director at YIDI Motion. 12+ years in linear motion exports to USA, Germany, Japan. We've shipped over 50,000 linear guide sets since 2020.

Procurement Challenges with Small Linear Guides
Key Features of Our 15mm Rails
Detailed Technical Specifications
Real-World Applications
Installation Tips from the Factory Floor
Maintenance Realities
Shipping & Lead Times to USA/EU
Why YIDI Motion Factory?
OEM/ODM Capabilities
Buyer FAQs
What Importers Say

Why Sourcing 15mm Linear Guide Rails Trips Up Procurement Teams

Sourcing compact linear guides like the 15mm size often starts with a spec sheet hunt. Purchasing managers hit roadblocks fast. Off-the-shelf options from big names? Sure, but markups kill margins. Chinese factories promising dirt-cheap prices? Quality roulette.

We've seen it repeatedly. A US automation firm orders HGH15CA blocks from a random Alibaba seller. Rails arrive with uneven preload, carriages bind after 500km. Downtime costs stack up. Or lead times drag from 8 weeks to 4 months because the supplier subcontracts.

That's the trap. At YIDI Motion, our Hebei factory cuts through it. Direct from production line to container. No middlemen inflating costs. We've exported to 50+ countries, including tight-tolerance builds for German CNC rebuilds and US pick-and-place robots.

Consider your workflow. You're speccing for a compact XY table or 3D printer gantry. Rail width can't exceed 15mm block footprint. Load ratings need to handle 2-5kN dynamic without deflection. Surface finish Ra 0.8 or better to minimize stick-slip.

Procurement directors tell us the real pain: verifying supplier claims. Photos look good, but tolerances? ±0.005mm on raceways isn't universal. We document every batch with CMM reports. Saves you the inspection headache.

One more angle. Tariff risks on linear motion components from China to USA. We optimize HS codes and provide full paperwork for Section 301 exemptions where applicable. Keeps your landed cost predictable.

Short story: Don't chase the lowest quote. Factor in repeatability, preload consistency, and post-sale support. That's where 15mm linear guide rails from proven exporters shine.

What Sets Our 15mm Linear Guide Rails Apart

These aren't generic sliders. Our HGR15 rails and HGH15 carriages use C3-grade ball bearings, Gothic arch contact for even load distribution. Four rows handle moments in all directions – critical for off-center loads in small robots.

Material? Hardened steel raceways at 58-62 HRC. Black oxide finish resists corrosion in mildly humid shops. No flaking like cheaper phosphate coats.

Preload options: light (Z), medium (ZA), heavy (Z0). Most buyers stick with ZA for 50-70% rigidity boost over no-preload. We've tested: reduces vibration in high-speed traverses by noticeable margins.

Compact profile: Rail height just 12mm, width 15mm. Fits where 20mm rails won't.
High rigidity: Moment load up to 4.2kN-m in pitch.
Low friction: μ=0.003 under load, thanks to ball retainer design.
Interchangeable: Matches HIWIN HGH15 / THK SHS15 footprints. Drop-in replacement.

Operationally, these rails excel in repetitive motion. Factory runs show 100m+ travel life at 0.2C speed under 2kN load. Better than expected for the size.

Buyers often overlook end cap seals. Ours use nitrile rubber, double-lip for dust exclusion. Lab tests: IP65 equivalent in dusty environments.

Request Sample Rail Section

Technical Specifications Table – HGR15 Rail & HGH15 Block

Model	Dimension (W x H x L)	Dynamic Load (C) kN	Static Load (C0) kN	Weight kg/m (Rail)
HGR15	15 x 12 x Custom Cut	12.6	20.5	1.4
HGH15CA (ZA Preload)	47 x 38 x 61.8 (std)	12.6	20.5	0.48 (Block)
Rail Lengths	100mm to 4000mm	Tolerance: 0/-0.5mm	Straightness: 0.1mm/300mm	N/A
Max Travel Speed	3m/s	Accel: 1.5G	Temp Range: -10°C to 80°C	N/A

Custom lengths no upcharge under 3m. Full PDF spec sheet available on request.

Where 15mm Linear Guides Deliver in the Field

Compact size opens doors. Think lab automation: pipette positioners needing micron repeatability. Or desktop CNC routers – Z-axis slides without frame bulk.

US importers use them in packaging machines. Film dispensers with servo-driven carriages. Low profile keeps headroom for grippers.

Another spot: Medical device assembly. Cleanroom-compatible with optional stainless caps. We've supplied lines for insulin pump testers – 24/7 duty cycles.

3D printing pros swap in our rails for stock. Smoother belts, less resonance at 200mm/s prints. Distributors report repeat orders from hobby-to-pro upgrades.

Even drones. Gimbal stabilizers in tight payloads. Moment loads handled without whip.

Warning: Undersized for heavy mills. Stick to 20mm+ there. But for precision light-duty? Spot on.

Factory-Approved Installation for 15mm Rails

Mounting seems simple. Until parallelism bites. Use dial indicator on carriage: aim for <0.02mm/300mm deviation.

Fix rails with M4 screws, 100mm spacing. Torque 2.5Nm. Overdo it, warp the rail.

Lube? Lithium grease NLGI 2, thin film on raceways. Every 500km or quarterly.

Alignment trick: Install one rail, run carriage unloaded, shim the second to match path.

Common mistake: Mixing vendors. Even same model, preload varies. Stick to matched sets.

Muffler Bearings

Clean mounting surfaces – no burrs.
Pre-align rails visually.
Secure loosely, test-run, tighten.
Check for binding post-24hr settle.

Our kits include shims and torque wrench guide. Ask for Install PDF →

Keeping 15mm Linear Guides Running Smooth

Neglect shows quick in small sizes. Balls pick up grit faster.

Monthly: Wipe externals, re-lube. Feel for drag increase.

Yearly: Disassemble if high-dust. Ultrasonic clean raceways.

Life expectancy? 10,000km+ typical. Monitor with vibration sensor if automated.

Pro tip: Excess grease attracts dust. Sparingly.

Global Shipping Details for 15mm Linear Guide Orders

12mm linear guide rail 12mm linear rail guide 15mm linear rail

From Shijiazhuang to LA port: 25-35 days sea. Air: 7-10 days DHL/FedEx.

MOQ 2 sets. Pack in foam-lined crates, 50m rail per.

USA duties: Around 2.5% HS 8483.50. Incoterms FOB or CIF.

Lead time: Stock 1-2 weeks, custom 3-4 weeks. 100 employees, German/Japanese grinders keep it tight.

Track via our portal. Get Shipping Quote

YIDI Motion: Your 15mm Linear Guide Factory Partner

Established 2020, 100 staff, 30% senior techs. Ball screws, linear modules too – one-stop linear motion.

Equipment: Japanese Okuma grinders, German Zeiss CMM. Ensures raceway parallelism 3µm/300mm.

Exports to USA, Canada, Germany, Japan. Phone: +86 18134111662 | Email: adam@yidimotion.com | Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China.

Certs: ISO9001 ISO9001, CE, RoHS. Full audits welcome.