Strong CR Type Collet chucks for CNC Lathes
Product overview
About this machine.
Auto Strong is the flagship brand of Taiwan's Di Chun Iron Work Co. Ltd. a precision engineering company founded in 1974. In 1992, Di Chun launched the Auto Strong brand symbolizing strength and accuracy "like an eagle's claw" to reflect its focus on high-performance and reliability. Today, Auto Strong is a global supplier of advanced workholding solutions, producing a wide range of chucks and accessories including power chucks, collet chucks, hydraulic cylinders, scroll chucks, and both soft and hard jaws. They also develop special purpose chucks tailored for demanding industrial applications. With ISO and CE certifications, Auto Strong emphasizes innovation, research, and continuous improvement in manufacturing. The company also invests heavily in its people, fostering specialist training, teamwork, and shared rewards. By combining technical excellence with a strong culture of reliability and service, Auto Strong has earned a trusted position in the global machine tool equipment industry.
The Auto Strong CR Type Collet Chucks are designed for CNC lathes fitted with hydraulic actuators, offering outstanding precision, rigidity, and efficiency. The CR42 collet chuck system suits most CNC lathes, providing a compact, stable, and high-performance workholding solution. These chucks accept CR42 style collets, available in a wide variety of shapes and sizes to suit different machining applications. Collets are easily front mounted by removing the retaining nut and locking bolt, allowing for fast setup and smooth changeovers. Built to Auto Strong's high manufacturing standards, the CR Series delivers excellent concentricity, strong gripping power, and minimal runout, making them ideal for high speed and high accuracy turning. With a compact design that minimizes spindle overhang, these chucks also enhance rigidity and cutting performance. Combining durability, accuracy, and ease of operation, the Auto Strong CR Type Collet Chucks are a trusted solution for workshops and production environments seeking reliable performance from their CNC lathes.
Features:
- High precision, fast speed, high rigidity & long durability are core design attributes of the CR series
- Bayonet catch mechanism is especially effective for bar work on NC/CNC lathes
- Through hole feed capability supports seamless bar feeding straight through the chuck
- Quick change spring collet system. The cap can be disassembled to rapidly swap collets
- Compact design reduces spindle overhang and enhances rigidity and stability
- Excellent concentricity and minimal runout ensures high accuracy turning
- Durable, high quality construction built for long term performance in production environments
- Compatible with a wide range of CR42-style collets, offering maximum flexibility across varied workpiece sizes and profiles
Published data
Specifications
Scroll horizontally to compare models or capacities. Use these to shortlist. We’ll confirm the specification and configuration against the application.| Strong Model | Matching adaptor | Bar capacity (mm) | Sleeve stoke (mm) | Max. Push force KN(kgf) | Max. Grip force KN (kgf) ( | Max. Speed (r.p.m) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| CR42-140 | 140 | 42mm | 7mm | 25kN (2549) | 55kN (5608) | 6000 rpm | 6.2 kg |
| CR52-170 | 170 | 52mm | 7mm | 30kN (3059) | 65kN (6628) | 5000 rpm | 12.5 kg |
| CR60-170 | 170 | 60mm | 7mm | 30kN (3059) | 65kN (6628) | 5000 rpm | 11.5 kg |
| CR60-220 | 220 | 60mm | 7mm | 30kN (3059) | 65kN (6628) | 5000 rpm | 15.5 kg |
| CR80-220 | 220 | 80mm | 7mm | 35kN (3568) | 73kN (7443) | 4000 rpm | 19.5 kg |