IKO BWU17-20 High Rigidity Precision Linear Slide Unit
Two rows of steel balls in four‑point contact with raceways; integrated table‑bed design, all stainless steel construction, non‑recirculating ball retainer.
Model: IKO BWU17-20Series: BWU (High Rigidity Precision Linear Slide Unit, limited‑stroke compact ball slide)Core Structure: Two rows of steel balls in four‑point contact with raceways; integrated table‑bed design, all stainless steel construction, non‑recirculating ball retainer.Source: IKO Nippon Thompson Official Catalog (CAT‑1561E, Linear Motion Rolling Guide – BWU Series).
Official Specifications (mm / N / N·m, from IKO Global Catalog)
Nominal Dimensions
- W (Table Width): 17
- H (Assembly Height): 8
- H1 (Table Thickness): 1.5
- N (Bed Height): 5
- L (Overall Length): 20
- Maximum Stroke Length: 14 mm
- Weight (Ref.): 0.015 kg
Table Mounting Dimensions
- W1 (Table Mounting Width): 12
- L1 (Table Mounting Length): 10
- L3 (Table Mounting Hole Pitch): 10
- d (Table Mounting Hole Diameter): 4.5
- t (Table Mounting Hole Depth): 0.8
- M (Table Mounting Screw): M2
- Max Fixing Thread Depth: 3 mm
Bed Mounting Dimensions
- W3 (Bed Mounting Width): 7
- H2 (Bed Base Height): 5
- P (Bed Mounting Hole Pitch): 7.5
- d1 (Bed Screw Hole Diameter): 2.4
- d2 (Bed Counterbore Diameter): 4.2
- h (Bed Counterbore Depth): 2.3
- n (Bed Edge Lip): 1 mm
Load Ratings (Official Values)
- Basic Dynamic Load Rating (C): 588 N
- Basic Static Load Rating (C₀): 635 N
- Allowable Load (F): 212 N
- Static Moment Rating (T₀): 2.5 N·m
Key Performance Parameters
- Operating Temperature: -20°C to +100°C (continuous)
- Maximum Speed: ≤30 m/min
- Material: All steel components = stainless steel (SUS440C) for corrosion resistance.
- Preload: Standard preload set at factory
- Lubrication: No pre‑packed grease; apply lithium‑soap base grease before use.
Key Official Features
- Ultra‑Compact & High Rigidity: Two‑row four‑point contact ball structure delivers stable rigidity and accuracy under complex/multi‑directional loads, ideal for limited‑stroke precision positioning.
- Full Stainless Steel Construction: All steel parts made of stainless steel, excellent corrosion/heat resistance, suitable for cleanroom environments and applications requiring rust prevention.
- High Precision & Smooth Motion: Simultaneous grinding of dual raceways minimizes error; non‑recirculating ball retainer ensures low‑friction, stick‑slip‑free linear movement.
- Simple Installation: Integrated table‑bed design, standardized mounting dimensions, direct mounting without complex assembly.
- Cleanroom Compatibility: No synthetic resin parts, no grease emission, suitable for semiconductor, medical, optical and precision instrument equipment.
