IKO CRW1-20 Crossed Roller Way
Cylindrical rollers alternately arranged orthogonally between two V‑groove ways; four‑point contact design supports loads in all directions (radial, lateral, moment) with ultra‑high precision and smooth linear motion.
Model: IKO CRW1-20Series: Crossed Roller Way (CRW Series, Standard Type, Size 1)Core Structure: Cylindrical rollers alternately arranged orthogonally between two V‑groove ways; four‑point contact design supports loads in all directions (radial, lateral, moment) with ultra‑high precision and smooth linear motion.Material: High‑carbon chromium bearing steel (standard); stainless steel (SL) optional.Source: IKO Nippon Thompson Official Catalog (CAT‑1579E, Crossed Roller Way Series).
Official Specifications (mm / N, from IKO Global Catalog)
Boundary Dimensions (per set: 4 ways + 2 roller cages)
- A (Overall Width): 8.5
- H (Assembly Height): 4.0
- L (Way Length): 20 (1×10)
- E (Roller Pitch): 0.5
- Dw (Roller Diameter): 1.5
- R (Roller Effective Length): 16.5
- Z (Number of Rollers per Cage): 5
- p (Cage Pitch): 3.0
- e (Cage Overhang): 2.25
Mounting Dimensions
- W (Mounting Width): 3.9
- g (Mounting Depth): 1.8
- M (Mounting Screw): M2
- d1 (Screw Hole Diameter): 1.65
- d2 (Counterbore Diameter): 3.0
- h (Counterbore Depth): 1.4
- t (Way Thickness): 1.7
Weight
- Way weight (per meter): 0.49 kg/m
- Roller cage weight (per cage): 0.38 g
Load Ratings (per cylindrical roller, official values)
- Basic Dynamic Load Rating (CU): 125 N
- Basic Static Load Rating (C0U): 120 N
- Allowable Load (FU): 39.8 N
Key Performance Parameters
- Maximum Stroke Length: 10 mm
- Operating Temperature: -20°C to +100°C (continuous)
- Maximum Speed: ≤30 m/min
Key Official Features
- Ultra‑High Precision & Rigidity: Orthogonally arranged cylindrical rollers provide zero‑backlash, high‑stiffness linear motion with micron‑level positioning accuracy, ideal for precision instruments, optical equipment and semiconductor machinery.
- Multi‑Directional Load Capacity: Four‑point contact structure withstands radial, lateral and combined moment loads equally in all directions.
- Compact & Space‑Saving: Miniature Size 1 design (8.5 mm width × 4.0 mm height) for ultra‑compact equipment layouts.
- Smooth & Stable Motion: Precision‑ground raceways and roller cages ensure low‑friction, vibration‑free travel.
- Interchangeable & Easy Installation: Standardized dimensions, direct replacement without design modifications; available in standard (carbon steel) or stainless steel (SL) for corrosive environments.
- Standard End Stopper: Equipped with end stopper SA (Size 1 standard) to prevent cage overtravel.
