Pfaff-Silberblau RSJ 50 Rail Jack

Model RSJ 50 | Capacity 5,000 kg | Lift 360 mm | DIN 7355 Compliant | Rail-Specific Shoe Base | Raku Ratchet Crank

The Pfaff-Silberblau RSJ 50 is a purpose-designed rail jack for railway track maintenance, certified to DIN 7355. The RSJ 50 features a distinctive shoe-type foot with wider support surface, allowing the jack to be applied between sleepers and tracks on gravel ballast. 5,000 kg capacity matched to typical rail work: sleeper replacement, point gear adjustment, fishplate work. Standard Raku ratchet crank enables operation in the confined space between sleepers.

Technical Specifications

Height of Lift = Height A + Lift = 1,100 mm. Dimensions A = 740 mm, B = 200 mm, C = 250 mm, D = 108 mm, N = 275 mm. The shoe-type foot has a wider support surface than the standard SJ for stability on ballast.

Key Features

• Precisely machined gearbox: Optimal gear ratio ensures minimum operator effort and smooth operation.
• Hardened gearing parts: Low wear and extended service life under demanding industrial conditions.
• Load held in any position: Self-energising load brake generates axial pressure proportional to load weight, securely holding the load when the crank is released.
• Robust steel construction: Steel design with toothed rack of solid material for industrial and outdoor use.
• Load support on claw or head: No reduction of capacity when lifting on the claw, full WLL available at any rated position.
• Rail-specific shoe-type foot: Wider base designed for application between sleepers and tracks. Stable on gravel ballast.
• Self-locking, anti-kickback crank: Handle can be tilted for use in confined spaces between sleepers.
• 5,000 kg capacity: Matched to rail maintenance loads: sleeper replacement, point gear, rail joints.

Suitable Applications

The specialist rail jack for railway track maintenance. Applications: sleeper replacement, point gear and switch adjustment, rail joint and fishplate work, ballast preparation, and small-scale re-railing operations.

How to Use the Pfaff-Silberblau RSJ 50 Rail Jack

1. Position between sleepers: Place on stable ballast or a foot-pad if ballast is loose.
2. Position jack head under rail: Position directly under the rail foot, ensuring vertical load alignment.
3. Engage the rail: Slowly raise until contact with the rail. Verify stable contact.
4. Lift using the Raku crank: 28 daN hand effort at WLL, single operator manageable.
5. Hold position: Load brake holds automatically when crank is released.
6. Carry out work: Perform maintenance with rail held in lifted position.
7. Lower and remove: Reverse crank to lower, remove jack from between sleepers.

Warning: Rail work must comply with the network operator's Rule Book (e.g. Network Rail Track Worker Safety in UK). Possession of the line, isolation, and competent supervision are essential.

Safety Information

• Always inspect the jack before each use (base plate, rack, gear housing, crank).
• Never exceed the Working Load Limit stamped on the jack body.
• Use only the manufacturer-approved crank, never with extension bars or mechanical drives.
• Never use on soft ground, ice, or unstable surfaces.
• Never side-load, angle-load, or use the jack to lift persons.
• For sustained load support, place additional supports beside the jack before any work beneath the load.
• LOLER 1998 thorough examination required every 12 months where used as lifting equipment.
• Rail work requires appropriate possession, isolation, and safe system of work from the infrastructure operator.
• The shoe-type foot must bear on stable ballast or a foot-pad.

Inspection and Maintenance

Inspect the rack, gear housing, claw, shoe-type foot, and crank before each use. The shoe-type foot is exposed to ballast wear and should be inspected frequently. Lubricate annually. WOLFF Onsite provides LOLER inspection.

Optional Accessories

• Pfaff Cranks: Replacement Raku, Siku, or Sifeku cranks.
• Rail grab: Complementary rail grab accessory for re-railing operations.
• LOLER inspection and overhaul service: WOLFF Onsite provides full LOLER inspection.

Downloads

• Pfaff RSJ Datasheet (EN, 2024) , full spec tables and dimensional drawings (PDF)

Frequently Asked Questions