Heavy Load Linear Ball Guides - TO Series
TOW-CC/HC: Flange Type
IMTEK TO series Flange Type linear ball bearing provide a compact, wide-base mounting solution designed for applications that require high stability and easy installation. Built on the TO Series heavy-duty platform, the TOW variant uses a flanged block design that increases mounting surface area, improves rigidity, and simplifies integration into machine frames and automation modules.
Each rail is precision-ground to micron-level straightness, ensuring smooth, stable motion even in high-torque or high-vibration environments. The TO Series features an enlarged ball track, improved preload design, and durable bearing steel construction—making it ideal for CNC machining centers, industrial automation systems, gantry equipment, and high-force linear positioning
- Linear guide block fixing method:
Lock from above or below (TOW-CC/HC); - Different length of TO series Flange type:
-CC for normal length
-HC for extra length of linear bearing block. - Different materials of IMTEK linear ball guides:
-Alloy steel for normal series products.
-Stainless steel material, a new version for special application environment.
Design Advantages and Structure
TOW Series offers smooth linear motion, high load capacity, and excellent moment-resistance, thanks to its optimized four-row ball circulation structure and precision-ground raceways. The wide flange block minimizes installation errors, making it ideal for CNC machinery, industrial robots, semiconductor equipment, and gantry-type systems that demand stable and repeatable positioning.
With durable bearing steel construction, low-friction ball tracks, and ISO-certified manufacturing quality, IMTEK’s TOW Flange Type Linear Ball Guides deliver long service life, high precision, and reliable performance even under heavy loads or continuous-duty operation. It is the perfect choice for engineers seeking high-rigidity, easy-to-mount linear motion components.
Core Advantages:
- Flange-type block design for stronger mounting stability, reduced installation errors, and easier machine integration.
- High rigidity & heavy-load performance, built on the TO heavy-duty platform—ideal for applications with high moments or demanding force.
- Four-row ball circulation structure ensures smooth, low-friction linear motion with excellent precision.
- Precision-ground raceways provide stable accuracy, low noise, and long-term reliability.
- Perfect for CNC machines, industrial robots, gantry systems, and semiconductor equipment.
- Easy installation thanks to the wide flange base and improved structural rigidity.
- Durable bearing-steel construction that supports long service life under continuous, heavy-duty operation.
Technical Data
- BASIC INFORMATION
- BODY STRUCTURE
- MODEL NAME
- DIMENSIONS
| Series | TO Series |
| Size | 15/20/25/30/35/45/55/65 |
| Block Type | Flange |
| Load Type | Heavy Load/Super Heavy Load |
| Block Fixing Method | Lock from above or below |
| Length of Rail | 100~6000mm |
| Numbers of Block | 1/2/3/4/5/6 |
| Accuracy level | C(normal);H(high);P(precision) |
| Certification | ISO 9001/ISO 14001 |
| Block Dimensions | TOW-15/20/25/30/35/45/55/65-CC/HC |
| Installation Width(W) | 47; 63; 70; 90; 100; 120; 140; 170 |
| Combination Height(H) | 24; 30; 36; 42; 48; 60; 70; 90 |
| Length(L) | 61.4; 77.5/92.2; 84/104.6; 97.4/120.4; 112.4/138.2; 139.4/171.2; 166.7/204.8; 200.2/259.6 |
| Thread(M*l) | M5; M6; M8; M10; M10; M12; M14; M16 |
| Hole Spacing(B) | 38; 53; 57; 72; 82; 100; 116; 142 |
| Hole Spacing(C) | 30; 40; 45; 52; 62; 80; 95; 110 |
| Block Material | 20CrMo |
| Rail Dimensions | TOR 15/20/25/30/35/45/55/65 |
| Width(WR) | 15; 20; 22; 28; 34; 45; 53; 63 |
| Height(HR) | 15; 17.5; 22; 26; 29; 38; 44; 53 |
| Hole Pitch(p) | 60; 60; 60; 80; 80; 105; 120; 150 |
| D×h×d | 7.5*5.3*4.5; 9.5*8.5*6; 11*9*7; 14*12*9; 20*17*14; 23*20*16; 26*22*18 |
| Static Capacity C0(kN) | 23.47; 36.68/47.96; 52.82/69.07; 71.87/93.99; 93.88/122.77; 146.71/191.85; 211.23/276.23; 287.48/420.17 |
| Dynamic Capacity C(kN) | 14.7; 27.1/32.7; 34.9/42.2; 48.5/58.6; 64.6/77.9; 103.8/125.3; 125.3/184.9; 213.2/277.8 |
| Rail Material | S55c Alloy Steel |
Heavy load ball bearing in Wire-cutting Machines
Wire-cutting systems operate with fine wire electrodes, where even slight vibration or motion deviation can affect straightness and dimensional accuracy. The wide flange-type ball bearing block of the TO Series creates a larger installation surface, improving baseline stability and reducing machine-frame deformation under load.
The heavy-duty four-row ball circulation design enhances moment load capacity, helping the linear platform maintain accuracy during rapid X/Y-axis movements. Additionally, precision-ground raceways ensure extremely smooth motion, which is crucial for achieving clean, burr-free cutting surfaces.Learn more about linear guide requirements in wire EDM machines, including reversal accuracy, micro-feed stability, preload, and contamination control.
Milling Machines
Flange-type linear guides provide a stable, rigid mounting foundation ideal for milling machine structures that experience continuous cutting forces, rapid feed movements, and multidirectional loads. Their wide mounting base improves integration with the machine frame, ensuring precise and consistent linear motion even under heavy-duty machining conditions.
Product Highlights
- Stronger machine-base connection for superior rigidity during deep or heavy milling cuts.
- Excellent torsion resistance to maintain accuracy during demanding side milling and slotting.
- Stable high-feed performance, minimizing chatter and enabling more aggressive toolpaths.
- Long-term alignment retention due to the reinforced wide-flange mounting design.
- Ideal for multi-axis milling machines, ensuring precise X/Y/Z-axis motion under varying loads.
What Are the Advantages of Flange Type Linear Guides in Machine Design?
Flange type linear guides provide a wider mounting surface that improves installation stability and load distribution in machine structures. Their flange block design helps reduce mounting deformation and is widely used in CNC machines, gantry systems, and industrial automation equipment requiring high rigidity and stable positioning performance.
Why Are Flange Linear Guides Commonly Used in Gantry and Milling Machines?
Flange linear guides are commonly used in gantry systems and milling machines because the wider block structure improves mounting rigidity and helps support multidirectional loads during operation. The larger installation surface also helps maintain motion stability under continuous cutting forces and high moment conditions.
What Is the Difference Between Flange Type and Square Type Linear Guides?
Flange type linear guides provide a wider mounting footprint for improved installation stability and moment resistance, while square type guides are commonly selected for applications requiring compact side profiles and flexible mounting orientation. The best choice depends on machine structure and installation requirements.