Cube Testing Machine Manufacturer,Supplier and Exporter in India
Product Code : EL-CACTE-9446
Jlab Export is a leading Cube Testing Machine Manufacturer,and suppliers in India
Concrete cubes are crushed on this machine by an electric pumping unit, with a hand pump fitted as well. The load is read on Bourdon tube load gauges, calibrated against proving rings, that carry a maximum load pointer. Micro switches cut the motor near full capacity, and relays stop it restarting after a power failure.
Specifications
| Operation | Electrically cum manually (hand) operated |
| Load gauges | Bourdon tube type, with maximum load pointer |
| Gauge calibration | Against proving rings |
| Motor cut-out | Micro switches near maximum gauge capacity |
| Power failure | Relays prevent automatic restart |
| Pace control | Control knob on the electric pumping unit |
| Hand pump | Fitted to the electric pumping unit |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Curing and Crushing Cubes: Student Practicals
Students cast a set of cubes from one mix in Cube Moulds and compact each layer with a Concrete Vibrator or by rodding. The cubes are cured in water and crushed at 3, 7 and 28 days, three at each age. A plot of strength against age shows the fast early gain and the slower rise after the first week.
Each cube is placed with two of its cast side faces against the platens and loaded without shock until it breaks. Students read the failure load from the maximum load pointer and sketch the failure. A well-made cube usually leaves two cones, point to point, after its sides spall away.
Frequently Asked Questions
Which faces of the cube go against the platens?
Two opposite faces that were cast against the mould sides. The trowelled top face is never loaded, because it is not flat or parallel enough. Centre the cube on the lower platen before loading.
Why does an electric machine also have a hand pump?
With the hand pump the operator can bring the platen up to the cube gently or finish a test during a power cut. It also gives fine control on weak specimens.
How does a Bourdon tube load gauge work?
Oil pressure from the ram enters a curved, flattened tube that tries to straighten as the pressure rises. A linkage turns that movement into needle rotation. Since the ram pressure is the load divided by the ram area, the dial can be marked directly in load.
What does an unsatisfactory cube failure look like?
Watch for a failure on one side only, a crack running straight down or a split through one corner. These usually mean the cube was off centre, badly compacted or loaded on uneven faces. Note it on the test sheet beside the load.
Other Machines for Specimen Tests
- Semi Automatic Compression Testing Machine
- Digital Compression Testing Machine
- Universal Testing Machine
- Cylindrical Mould
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Last updated: 5 November 2026
