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Owner managed, ISO 9001:2015 certified manufacturer | 31 Michelson Road, Westwood, Boksburg, South Africa info@reliable-pressings.co.za | 084 408 3981

084 408 3981 Request a Quote

IMAGE & VIDEO GALLERY

Made in South Africa, used worldwide

A sample of the disc springs, conical wedge lock washers, impact extrusions and forgings we design and manufacture. Tap any picture to enlarge it, or play a video.

Disc Springs

Uniform cross-section coned annular discs to DIN-EN 16983 (ex DIN 2093), from small stacks to large Group 3 springs.

127 x 250 x 12 disc springs at final inspection — Final inspection, 127 x 250 x 12

127 x 250 x 14 disc springs checked and ready for dispatch — Checked and ready for dispatch

Stack of 64 x 125 x 8 reduced-thickness precision-machined disc springs — Group 3, precision machined

A range of disc spring sizes laid out — A range of sizes

Large disc spring stack in perspective with vernier — Large-diameter disc springs

DIN 2093 Group 2 disc springs stacked in series — DIN 2093 Group 2 series stack

Stack of 51 x 100 x 5 Group 2 disc springs — 51 x 100 x 5 Group 2 stack

Engineers reviewing disc spring documents before final QA — Paperwork checked before final QA

Rows of large disc springs ready for final QA before dispatch — Ready for final QA

Disc springs made overnight for a breakdown, ready for collection — Breakdown order, ready overnight

Tall stack of large disc springs — And some much larger

Videos

Set removal, 127 x 250 x 16Pre-setting a stack of large disc springs in the press

Client witness testingLoad testing witnessed by Tenova

Stress study, 172 x 340 x 9.5FEA result showing stress through the stack

See all disc spring sizes →

Fatigue Analysis

Dimension-driven CAD models and finite element stress studies of disc spring stacks.

Videos

Dimension-driven CAD modelDisc spring stack cross-section, dimensions updating as the stack compresses

Von Mises stress study, stack side viewFEA stress plot as the disc spring stack is loaded

Von Mises stress study, quarter-cut stack3D cut-away of the stack, stress scale 500 to 1600 MPa

Conical Wedge Lock Washers

Zinc Flaking Corrosion Protection

Zinc Flaking Corrosion Protection

Close-up of the cam face of a conical wedge lock washer — The Precision CAMS

Close-up of the cam face of a conical wedge lock washer — The Uppper GRIP surface, with the CAMS below

Grip marks on a 12.9 nut after removal — Grip marks on a 12.9 nut

Videos

Spring lock versus wedge lock pair, M30Spring lock loses preload, the wedge lock pair holds it

Junker test bed simulationAnnotated model of the transverse vibration test

M12 nut and washer preload lossClass 12.9 M12 connection loosening under vibration

See wedge lock washer bolt sizes →

Hot Forging

Induction-heated bar forged to a near-net shape that needs no grinding.

Videos

Induction heatingRound bar to working temperature in under 18 seconds (2x speed)

Hot forgingThe heated bar forged into a finished part, no grinding needed

Impact Extrusion

Parts formed from a slug in a single stroke of the press.

Videos

Impact extrusionParts formed in a single press stroke

Need a part made? Let’s quote it.

Send us your drawing, material and quantity, and we’ll come back with a price.

Request a Quote → Contact Us