Series S – Shaft Straightening Presses

Series S – Shaft Straightening Presses
The Series S Shaft Straightening Presses are precision-engineered, cost-effective machines designed for safely and accurately straightening bent shafts with complete control over pressing force.

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Mercury’s Series S Shaft Straightening Presses provide an efficient and reliable solution for correcting bent shafts in manufacturing and maintenance applications. The manually operated hand lever offers precise control over the pressure regulator, enabling operators to gradually increase the pressing force until the desired straightening tonnage is achieved.

For repetitive production requirements, the press incorporates a force repeatability stopper, ensuring consistent results across batches. Designed with operator safety in mind, the system automatically retracts as soon as the hand lever is released, making it one of the safest and most user-friendly shaft straightening solutions available.

Salient Features
• Specifically Designed for Shaft Straightening Applications
• Precise and Gradual Force Control
• Hand Lever Operated Pressure Regulation
• Consistent Force Repeatability for Batch Production
• Automatic Retraction for Enhanced Operator Safety
• Cost-Effective and Energy-Efficient Design
• Reliable and Accurate Straightening Performance
• Easy Operation with Minimal Maintenance Requirements
• Compact and Robust Construction
• Suitable for Manufacturing, Repair, and Maintenance Applications

Power Stroke 3/2 Valve

Part No. Description Seal Kit No.
S382 1/4″ 3/2 N.C. Pilot-Spring Valve for 2T & 4T Presses SKS382
S384 1/2″ 3/2 N.C. Pilot-Spring Valve for 8T, 15T & 30T Presses SKS384

Rapid Approach 5/2 Valve

Part No. Description Seal Kit No.
S682 1/4″ 5/2 Pilot-Spring Valve for 2T & 4T Presses SKS682
S684 1/2″ 5/2 Pilot-Spring Valve for 8T, 15T & 30T Presses SKS684

3/2 Plunger Valve

Part No. Description Seal Kit No.
S3121 1/8″ 3/2 Normally Closed Plunger-Spring Valve SKS3121

Plunger Operated Regulator

Part No. Description Seal Kit No.
RGS2 1/4″ Regulator for Shaft Straightening Press SKRGS2
RGS4 1/2″ Regulator for Shaft Straightening Press SKRGS4

Spare Seal Kit

Part No. Description
90-048 Seal Kit for Press Cylinder Model No. N021 & N024
90-049 Seal Kit for Press Cylinder Model No. N041 & N044
90-050 Seal Kit for Press Cylinder Model No. N081 & N084
90-051 Seal Kit for Press Cylinder Model No. N151 & N154
90-052 Seal Kit for Press Cylinder Model No. N301 & N304

Power Stroke Change Over Flow Control Valve

Part No. Description Seal Kit No.
F1 1/8″ Straight Flow Control Valve SKF1

Tonnage Gauge

Part No. Description
20-1328-2T For 2T ‘A’ Series Cylinders
20-1324-4T For 4T ‘A’ Series Cylinders
20-955-8T For 8T ‘A’ Series Cylinders
88-009-15T For 15T ‘N’ Series Cylinders
88-009-30T For 30T ‘N’ Series Cylinders



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