Parameter Sheet Overview for Yoke Type Track Rollers

This document provides detailed technical specifications for yoke type track rollers, specifically the RSTO and STO series without axial guidance and of open type design. The data includes mass, load ratings, fatigue limits, rotational speeds, and dimensional parameters for various model sizes.

1. Product Types and Models

• Yoke Type: Track Rollers
• Design: No axially guided, open type
• Series: RSTO and STO
• Variants: Models with and without inner rings

2. Mass Specifications

Mass values are provided in grams for both models without inner rings and with inner rings. Mass increases with model size, ranging approximately from 8.5 g (smallest RSTO 5 TV without inner ring) up to 617 g (largest STO 50 with inner ring).

3. Load Ratings

• Basic Dynamic Load (Crw): Ranges from 2,500 N for smaller models (e.g., STO 6 TV) up to 25,500 N for larger models (e.g., STO 50).
• Basic Static Load (C0rw): Varies from 2,550 N to 45,000 N across the model range.
• Fatigue Limit Load (Curw): Values decrease with increasing size, from 15,000 N for smaller models down to 750 N for the largest.

4. Rotational Speed

Maximum permissible rotation speeds (nDG) are specified in revolutions per minute (r/min), ranging from 300 r/min for smaller models up to 1,300 r/min for mid-sized models, with some larger models rated up to 1,800 r/min.

5. Dimensional Data

Key dimensions are provided for each model, including:

• D (Outer Diameter): From 16 mm to 90 mm
• d (Inner Diameter): From 6 mm to 50 mm
• C (Width): From 7.8 mm to 19.8 mm
• B (Track Width): From 9.8 mm to 19.8 mm
• E (Other relevant dimension): From 10 mm to 68 mm
• rmin (Minimum Radius): 0.3 mm to 1 mm

6. Tolerances and Notes

• The diameter of the inner ring raceway is denoted as F.
• The tolerance zone for the needle envelope circle is specified as F6.

Summary of Critical Parameters

Note: The table above highlights a selection of models to illustrate the range of parameters.

Best Practices and Recommendations

• Select the appropriate model based on load requirements and rotational speed limits.
• Consider mass differences when choosing between models with or without inner rings for weight-sensitive applications.
• Adhere to specified tolerance zones (F6) to ensure proper fit and function.
• Verify dimensional compatibility with mating components, especially inner and outer diameters.

This parameter sheet serves as a comprehensive reference for engineers and designers specifying yoke type track rollers in mechanical systems, ensuring optimal performance and reliability.