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RUBASIA RUBBERTECH INDUSTRIES – The Best Rubber Coupling Supplier in Malaysia

The Largest Rubber Coupling Manufacturer Malaysia

The Highest Quality Rubber Coupling for Industrial Use

Market Leader of Industrial Rubber Engineering Products

The Biggest Rubber Coupling Range in Malaysia

The Widest Range of Industrial Rubber Coupling Supplier for Borneo

1.1 Sabah – Full Industrial Region Coverage (Large + Small Towns)

West Coast & Interior:
Kota Kinabalu, Penampang, Putatan, Papar, Kinarut, Lok Kawi, Kawang, Tuaran, Tamparuli, Kiulu, Kota Belud, Tenghilan, Kota Marudu, Pitas, Kudat, Matunggong, Ranau, Kundasang, Tambunan, Keningau, Sook, Nabawan, Tenom, Beaufort, Membakut, Bongawan, Sipitang, Kuala Penyu.

Sandakan Region:
Sandakan, Batu Sapi, Mile 4, Mile 7, Mile 12 Labuk Road, Beluran, Telupid, Kinabatangan, Tongod.

Tawau Region:
Tawau, Bandar Sri Indah, Merotai, Balung, Kunak, Semporna, Lahad Datu, Silam, Felda Sahabat.

 

1.2 Sarawak – All Cities, Towns, Districts for SEO Dominance

Urban Industrial Zones:
Kuching, Petra Jaya, Pending, Kota Samarahan, Serian, Bau, Lundu, Sematan.

Central Sarawak:
Sibu, Mukah, Dalat, Daro, Kanowit, Kapit, Song, Belaga, Julau, Pakan.

Northern Sarawak:
Bintulu, Tatau, Sebauh, Miri, Marudi, Bekenu, Niah, Batu Niah, Limbang, Lawas.

Agriculture & Plantation Towns:
Betong, Saratok, Pusa, Kabong, Roban, Lubok Antu, Engkilili.

 

1.3 Brunei – Full District Coverage

Bandar Seri Begawan, Gadong, Kiulap, Beribi, Lambak, Serusop, Muara, Mentiri, Tutong, Seria, Lumut, Kuala Belait, Labi, Sukang, Bangar (Temburong).

 

2. Complete Technical Description – Spider / Rotex Jaw Coupling

The RUBASIA RUBBERTECH Spider Rubber Coupling is a torsionally flexible elastomeric jaw-type couplingengineered for precision torque delivery, vibration absorption, misalignment handling, and machinery protectionin harsh industrial environments.

It consists of:

1️⃣ Two metallic hubs (Aluminium, Cast Iron, or S45C Steel)

Each hub has precisely crowned, concave jaws arranged around a circle.

2️⃣ An elastomeric spider

The heart of the coupling—responsible for flexibility and energy absorption.

3️⃣ Fail-safe mechanical interlocking

Even if the elastomer fails, the metal hubs still transmit torque at reduced damping.

 

3. Ultra-Expanded Technical Features (Engineering-Grade)

🔧 3.1 Torque Transmission Efficiency

The curved-jaw geometry ensures 100% surface contact between hub jaws and spider segments.
Advantages:

• No backlash under proper preload
• Uniform pressure distribution
• Smooth torque delivery even under load jumps
• Lower motor load peaks

Performance is stable under:

• Variable torque
• Fluctuating RPM
• Starting surges
• Sudden stops

 

🔧 3.2 Torsional Vibration Damping

The elastomer absorbs vibrations generated by:

• Diesel engines
• Hydraulic pumps
• Positive displacement pumps
• Compressors
• Rotary blowers

This reduces:

• Motor bearing wear
• Shaft distortion
• Gearbox heating
• Seal failure
• Noise levels

 

🔧 3.3 Misalignment Compensation – Ultra Detailed

Spider couplings handle:

Parallel misalignment – ±0.2 to ±0.8 mm

Angular misalignment – up to 1° to 2°

Axial (end-float) – ±0.5 to ±1.5 mm

This is critical in Borneo industries where:

• Machinery bases are uneven
• Vibrations cause alignment shifts
• Humidity and heat cause metal expansion

 

🔧 3.4 Crowned Jaw Geometry – Deep Engineering Explanation

Traditional straight jaws cause edge pressure → premature spider wear.
RUBASIA’s crowned/jaw design offers:

• Center-loaded compression
• No corner stress
• Longer spider lifespan
• Higher torque tolerance
• Cooler running temperature

 

🔧 3.5 Maintenance-Free Operation

No lubrication required.
Elastomer absorbs wear without generating metal debris.

Users benefit from:

• Zero oil leaks
• No grease contamination
• No weekly maintenance
• Silent operation

 

🔧 3.6 Fail-Safe Safety Feature (Industrial Grade)

If the spider fails due to extreme overload:

• Hubs interlock
• Machine continues running
• Prevents sudden shutdown
• Allows emergency operation

Critical for:

• Pumps in water treatment (Sibu, Kuching, Miri)
• Marine cooling systems (KK, Labuan, Brunei-Muara)
• Palm oil mills (Lahad Datu, Sandakan)

 

🔧 3.7 Customisable Options for Harsh Environments

RUBASIA offers:

Hub Materials:

✔ Aluminium – lightweight, corrosion-resistant
✔ Cast Iron – strong, vibration dampening
✔ S45C Steel – high torque, heavy-duty

Spider Hardness:

✔ 92 Shore A – high damping
✔ 98 Shore A – high torque resistance
✔ High-Temp TPU – heat + chemical resistance

 

4. Full Technical Breakdown: How the Coupling Works (Advanced Engineering)

4.1 Spider Compression Mechanics

When torque is applied:

• Each jaw compresses a corresponding spider lobe
• Contact pressure distributes radially
• Spider deforms elastically and returns to shape

This creates:

• 360° damping
• Progressive stiffness response
• Optimized torsional elasticity

 

4.2 Damping Coefficient & Energy Absorption

The elastomer acts as a torsional spring + shock damper, absorbing:

• Motor startup impact
• Pump cavitation vibrations
• Imbalance in fans/blowers
• Torque spikes in conveyors

 

4.3 Thermal Behavior

Spider material resists:

• Heat buildup from vibration
• Ambient temperature up to 80–120°C
• Humid tropical climate of Borneo

 

4.4 Misalignment Stress Distribution

The elastomer "floats" between jaws and compensates for:

• Shaft height mismatch
• Thermal expansion
• Foundation settling
• Machine base vibration

This prevents:

• Shaft bending
• Bearing overload
• Seal leakage
• Motor overheating

 

5. Application Sectors (Super Expanded)

🏭 5.1 Palm Oil Mills (Sabah: Lahad Datu, Sandakan, Tawau)

Used in:

• Screw press
• Sludge centrifuge
• Kernel expeller machines
• Crude oil transfer pumps
• Clay bath conveyors

 

⚓ 5.2 Marine & Offshore (KK, Labuan, Brunei)

Used in:

• Seawater cooling pumps
• Hydraulic winches
• Fire pumps
• Air compressors
• Generator sets

 

⛽ 5.3 Oil & Gas (Bintulu, Miri, Seria)

Used in:

• Chemical dosing pumps
• Gas compressors
• Tank farm pumps
• Booster blowers

 

🏗 5.4 Construction, Quarry & Mining (Ranau, Bau, Belaga, Lawas)

Used in:

• Rock crushers
• Screening plants
• Conveying systems
• Vibrating feeders

 

🌬 5.5 HVAC & Building Services

Used in:

• AHU blowers
• Cooling tower pumps
• Booster pump sets

 

🧪 5.6 Manufacturing & Processing Plants

Used in:

• Packaging machines
• CNC machining centers
• Food mixers
• Agitators

 

6. Ultra-Detailed Installation Guide

Tools Required

• Feeler gauge
• Dial indicator
• Straight edge
• Torque wrench
• Allen keys
• Anti-rust cleaning solvent

 

Step-by-Step Instructions

Step 1 – Prepare the Shafts

Clean using solvent → remove dust, rust, oil films.

Step 2 – Inspect the Hubs & Spider

Check bore tolerance, keyway accuracy, jaw integrity, and spider hardness.

Step 3 – Pre-Align Both Shafts

Use straight edge or laser aligner.

Step 4 – Install Each Hub

• Slide hubs onto shafts
• Insert key
• Tighten set screws
• Ensure no axial play

Step 5 – Insert the Spider Element

Center each spider lobe into jaw pockets.

Step 6 – Bring Hubs Together

Maintain recommended gap (varies by model, e.g., GR14–GR75).

Step 7 – Perform Alignment Check

Use:

• Feeler gauge → angular
• Straight edge → parallel
• Dial gauge → concentricity

Step 8 – Tighten to Torque Specification

Must follow exact torque chart for set screws and bolts.

Step 9 – Manual Rotation Test

Check for:

• Drag
• Noise
• Binding
• Off-center rotation

Step 10 – 24-Hour Recheck

Recheck alignment after machine warms up.

 

7. Maintenance Guide (Industrial Standard)

Routine Maintenance:

• Inspect spider every 3–6 months
• Check for cracks, hardening, color fade
• Ensure no metal contact
• Recheck shaft alignment annually

Replacement Indicators:

• Spider becomes brittle
• Mid-lobe cracks
• Excessive compression marks
• Increased vibration
• Burning smell

 

8. Troubleshooting Guide (Advanced)

Problem	Possible Cause	Solution
High vibration	Misalignment	Re-align shafts
Noise during rotation	Worn spider	Replace spider
Overheating motor	Excess torsional load	Use higher hardness spider
Jerky rotation	Loose hubs	Tighten to torque spec
Spider cracking	Chemical exposure	Use TPU or higher grade PU