IKO BSP2040SL Precision Linear Slide Unit
Two‑row steel balls with four‑point contact (45° contact angle), integrated synthetic resin ball retainer, no built‑in dust seals, all‑stainless‑steel (SUS440C) components.
Model: IKO BSP2040SL (Limited‑stroke precision linear slide unit, standard stainless‑steel version)Series: BSP Precision Linear Slide Unit (limited‑motion, integrated table‑bed, stainless‑steel construction)Core Structure: Two‑row steel balls with four‑point contact (45° contact angle), integrated synthetic resin ball retainer, no built‑in dust seals, all‑stainless‑steel (SUS440C) components.Source: IKO Nippon Thompson Official Catalog CAT‑1561E (Linear Motion Rolling Guide – Ball Slide Unit BSP Series).
Official Specifications (mm / N / g, from IKO Global Catalog)
Basic Dimensions & Weight
- Unit Mass (Ref.): 23.7 g
- Nominal Width (W): 20 mm
- Overall Height (H): 10 mm
- Overall Length (L): 40 mm
- Maximum Stroke Length: 22 mm
- Table Mounting Dimensions:
- L1: 24 mm
- Mounting Screw (M1): M3
- Max Fixing Thread Depth (s1): 3.2 mm
- h1: 9 mm, t1: 1.4 mm
- Bed Mounting Dimensions:
- W2: 16 mm
- L2: 24 mm
- Mounting Screw (M2): M3
- Max Fixing Thread Depth (s2): 3.5 mm
- h2: 6.2 mm, t2: 1.4 mm
Load Ratings (Official Values)
- Basic Dynamic Load Rating (C): 726 N
- Basic Static Load Rating (C₀): 386 N
Key Performance Parameters
- Contact Structure: Two‑row, four‑point contact (45°) steel balls, supports radial, reverse‑radial, lateral loads in all directions
- Preload: Factory‑set standard preload
- Operating Temperature: -10°C to +100°C (continuous operation up to 100°C)
- Maximum Speed: ≤ 30 m/min
- Material: All steel parts = Stainless steel (SUS440C) for high corrosion resistance
- Sealing: No built‑in dust seals; external protective cover recommended for non‑clean environments
- Lubrication: No pre‑packed grease; apply lithium‑soap base grease directly to raceways before use
- Clearance (Standard): 0 ~ +4 μm
- Accuracy: High precision, simultaneous grinding of two‑row raceways for minimal motion error
Key Official Features
- Ultra‑Compact Integrated Design: U‑shaped precision‑formed stainless steel integrates rail and mounting surface, space‑saving for small precision equipment.
- Stable Multi‑Directional Load Capacity: Four‑point contact ball arrangement delivers consistent rigidity and load performance under combined/fluctuating loads.
- Smooth & Quiet Motion: Precision‑ground raceways + synthetic resin ball retainer eliminate ball collision, ensure low‑friction, stick‑slip‑free, quiet linear movement with high micro‑feed positioning accuracy.
- Excellent Corrosion Resistance: Full stainless‑steel construction, ideal for cleanroom, semiconductor, medical and anti‑rust‑required applications.
- High Safety: Non‑combustible/self‑extinguishing resin retainer, suitable for OA/household equipment requiring flame resistance.
Typical Applications
Semiconductor manufacturing/inspection equipment, precision measuring instruments, medical devices, cleanroom automation, optical equipment, miniature positioning stages, and high‑precision limited‑stroke linear motion systems.
