Introduction
HG Lengthed Slider is the extended-body variant within Baili's HG series linear guideway system, designated HGL. Compared to the standard HGH block, the HGL block increases body length by 30–50%, distributes ball contact across a wider span, and adds 4–6 mounting bolt positions on the top and side faces. The result is significantly higher resistance to overturning moments and a dynamic load rating approximately 40% above the equivalent HGH size - for example, HGL25 reaches 48.15 kN dynamic load capacity versus the HGH25 standard.
Within the HG series, three block types serve distinct application needs: the standard block (HGH) covers general-purpose linear motion; the wide block (HGW) offers a lower profile for height-constrained layouts; the HG Lengthed Slider (HGL) is the choice when rigidity and anti-moment performance take priority over compactness.
Key Features
Extended Block Body
Block length is 30–50% longer than the standard HGH block, distributing ball contact load across a wider span for more uniform force transmission under working conditions.
Additional Mounting Bolt Holes
4–6 bolt positions on the top and side faces - compared to 2–4 on the standard block - allow firmer platform attachment and more effective torque transmission.
Superior Anti-Overturning Rigidity
The combination of extended body length and additional fastening points delivers moment resistance that significantly exceeds the standard HGH block, keeping axis accuracy stable under heavy cutting and eccentric loads.
Higher Dynamic and Static Load Ratings
Increased effective ball contact turns raise both load ratings above the equivalent HGH size. HGL25, for example, achieves a dynamic load capacity of 48.15 kN, approximately 40% higher than HGH25.
Impact and Vibration Resistance
The extended contact structure distributes instantaneous shock loads across a greater ball span, making HGL suited to high-dynamic-load applications such as cutting, stamping, and press-fit operations.
Long-Term Precision Retention
Precision-ground raceways combined with preload adjustment maintain running accuracy and a backlash-free condition throughout service life, even under sustained heavy load.
Flexible Sealing and Lubrication
Standard seals, double seals, and scraper configurations are available to exclude chips, dust, and coolant. Optional self-lubricating units extend maintenance intervals for demanding environments.
Corrosion-Resistant Material Options
Martensitic stainless steel material and surface coating treatments are available for humid, corrosive, or cleanroom applications without compromising dimensional interchangeability with HGR rails.
Application Scenarios
| Field | Typical Equipment | Why HGL |
|---|---|---|
| Large CNC Machine Tools | Gantry machining centers, horizontal boring mills | Heavy cutting generates high overturning moments; HGL's anti-moment rigidity keeps axis accuracy |
| Heavy-Load Automation | Truss robots, press-fit systems, large handling gantries | High sustained load demands higher dynamic rating than HGH can provide |
| Laser Cutting Equipment | Large-format flatbed cutters, tube laser systems | Long-stroke heavy tables require resistance to bending deformation under load |
| Injection Molding / Die Casting | Large clamping and ejector mechanisms | High dynamic loads require exceptional rigidity through each cycle |
| Coordinate Measuring Machines | Large CMM, aircraft component inspection platforms | Long-term precision retention is critical; HGL's preloaded raceways maintain accuracy |
| Aerospace and Heavy Industry | Component assembly platforms, large structure processing | Extreme mass loads require maximum system rigidity |
How to Choose: HGL vs HGH vs HGW
| HGH (Standard) | HGW (Wide) | HGL (Lengthed) | |
|---|---|---|---|
| Block profile | Standard height and length | Low profile, wider base | Standard width, extended length |
| Mounting bolt count | 2–4 | 4 | 4–6 |
| Anti-overturning moment | Standard | Moderate (wider base) | Highest in HG series |
| Dynamic load rating | Baseline | Comparable to HGH | ~40% above HGH same size |
| Best suited for | General linear motion | Height-constrained layouts | Heavy cutting, high-moment, large equipment |
If your application involves sustained heavy loads, large overturning moments, or strict long-term rigidity requirements, HGL is the appropriate choice over HGH.
Specifications
OEM & Custom Orders
Baili accepts OEM and non-standard orders for HGL sliders, including:
- Custom block length beyond standard HGL proportions
- Stainless steel material (for corrosive or cleanroom environments)
- Custom sealing configuration (standard / double seal / scraper combination)
- OEM branding on product and packaging
- Special surface treatment: anodizing, electroplating, phosphating
Provide your drawing, load requirements, or working environment parameters and the engineering team will confirm feasibility and quote within one business day.
Ordering Information
| Item | Detail |
|---|---|
| MOQ | 1 piece |
| Standard lead time | 7–15 business days |
| Custom / OEM lead time | Confirmed upon drawing review |
| Accepted payment | T/T (30% deposit + balance); L/C available |
| Shipping | FOB Ningbo / Shanghai; express available for samples |
Why Baili
Zhejiang Baili Guide Rail Manufacturing Co., Ltd. operates a 14,000 m² production facility in Lishui City, Zhejiang Province, equipped with Japanese and German CNC grinders and a temperature-humidity-controlled precision measurement lab. The facility holds ISO 9001 certification and CE certification, with national patents covering linear motion product design. Monthly production capacity reaches 100,000 sets. Products are exported to customers in automation, CNC machinery, robotics, medical equipment, semiconductor manufacturing, and new energy industries worldwide.
- Certifications: ISO 9001 | CE | National Patents (linear motion design)
- Factory size: 14,000 m²
- Production capacity: 100,000 sets/month
- Export markets: Global - Americas, Europe, Southeast Asia, Middle East
FAQ
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