Thomson SPTWNM25 Twin Pillow Block Linear Ball Bushing Bearing

Description:

The Thomson SPTWNM25 Twin Pillow Block Linear Ball Bushing Bearing is used in precision linear motion systems to provide smooth, self-aligning travel on 25 mm end-supported shafts. Commonly installed in CNC machines, factory automation equipment, packaging machinery, robotics, semiconductor equipment, and material handling systems, this closed twin Super Ball Bushing® pillow block features two integrated recirculating ball bushings in a rigid aluminum housing for increased load capacity and stability. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of metric end-supported linear guide systems.

Applications:

The Thomson SPTWNM25 is designed for heavy-duty linear motion applications requiring greater rigidity and higher load capacity than single-bearing pillow blocks. It is commonly used in CNC machining centers, automated assembly equipment, packaging systems, robotics, inspection equipment, semiconductor manufacturing, and custom OEM machinery where accurate positioning and smooth linear travel are essential.

Technical Specifications:

• Manufacturer: Thomson Industries
• Manufacturer Part Number (MPN): SPTWNM25
• Product Type: Twin Pillow Block Linear Ball Bushing Bearing
• Series: Super Ball Bushing® Metric
• Pillow Block Type: Twin, Closed
• Bearing Configuration: Twin Bearings
• Bearing Style: Closed
• Self-Aligning: Yes
• Adjustable: No
• Nominal Shaft Diameter: 25 mm (0.984 in)
• Compatible Shafting: Thomson Metric (MM) End-Supported Shafting
• Housing Material: Aluminum Alloy
• Bearing Type: Recirculating Linear Ball Bushing
• Overall Width (A): 78 mm (3.071 in)
• Overall Length (B): 130 mm (5.118 in)
• Body Width (A1): 39 mm (1.535 in)
• Overall Height (H1): 60 mm (2.362 in)
• Shaft Center Height (G1): 65 mm (2.559 in)
• Mounting Hole Diameter (N): 8.4 mm (0.331 in)
• Mounting Hole Center Distance (E2): 94 mm (3.701 in)
• Secondary Mounting Distance (E1): 60 mm (2.362 in)
• Dynamic Load Capacity: 6,410 N (1,441 lbf)
• Maximum Operating Temperature: 85°C (185°F)
• Weight: 1.22 kg (2.69 lb)
• Corrosion Resistance: Standard (Non-Corrosion Resistant)
• Wipers/Seals: No Wipers
• Roll Pack: No
• Food Grade Rated: No
• Features: Twin closed bearing design, self-aligning construction, lightweight aluminum housing, high rigidity, integral recirculating ball bushings, smooth low-friction operation, and precision linear guidance.

Common Replacements:

• Thomson SPTWNM25-DP
• Thomson SPTWNM25-CR
• Thomson SPTWNM25-NBA