Description
Product Overview
The LBP821-K1200 is the widest standard variant in the LBP821 double hinge roller accumulation chain series — and the widest roller accumulation chain in the EverPower standard product range. At 1,200 mm chain width, this chain handles the most demanding wide-format accumulation scenarios in Australian food and beverage manufacturing: five-file can accumulation, four-file large bottle accumulation, three-file case accumulation, and wide-format multipack buffer zones where a single chain width must cover the full product footprint across multiple parallel product lanes. EverPower plastic chain Australia Pty Ltd supplies the LBP821-K1200 as a direct replacement for System Plast LBP821 at K1200 width.
Maximum conveyor run 12 m, working load 2,750 N, operating temperature -40 C to +90 C, 25.4 mm pitch, double hinge with SUS304 pins, POM-C plate and roller material, packing 5 ft per box at 26 links per metre. The K1200 is the format where the widest accumulation conveyor footprint is consolidated into a single chain strand — eliminating the alignment, drive synchronisation, and maintenance complexity of multiple parallel narrow chain strands covering the same product width. Contact the EverPower Sydney team for project specifications.
Technical Specifications — LBP821 at K1200
| Parameter | Value |
|---|---|
| Chain series | LBP821 (double hinge, 821 chain body) |
| Width designation | K1200 (1,200 mm) |
| Hinge type | Double, two SUS304 pins per link joint |
| Roller material | POM low-noise roller on POM axle boss |
| Back-pressure CoF | 0.01–0.02 |
| Back-pressure reduction vs flat top | ~90–95% |
| Max. conveyor run | 12 m |
| Working load | 2,750 N |
| Max. speed (dry) | 60 m/min |
| Operating temperature | -40 C to +90 C |
| Pitch | 25.4 mm |
| Links per metre | 26 |
| Packing | 5 ft / box (26 links/m) |
K1200 Engineering: Maximum Width, Maximum Complexity
A K1200 double hinge roller chain is not a simple scale-up of K750 or K1000 engineering. At 1,200 mm width, three new engineering considerations become significant that are manageable at narrower widths but critical at K1200.
Lateral Stiffness and Inner-Edge Buckling
The chain must remain flat across its full 1,200 mm width when carrying an asymmetric product load — for example, when the left three product files are fully loaded and the right two files are empty, as commonly occurs at the entry to an accumulation zone. Asymmetric loading generates a torsional moment across the chain width that can cause the lighter-loaded side to lift off the guide rail surface, creating a surface discontinuity. The LBP821-K1200 uses a reinforced link plate with additional lateral web structure to resist this torsional lifting, maintaining flat surface contact across the full width under the specified asymmetric load conditions.
Drive Motor Sizing
The chain weight per metre at K1200 is approximately 9–12 kg/m (depending on roller density), compared to approximately 3–4 kg/m for K325. The drive motor must overcome this increased chain weight on the return strand in addition to the product load on the carrying strand. For a 12-metre K1200 run at rated product load, the total drive resistance (chain weight + product friction + chain-to-rail friction) typically requires a drive motor in the range of 1.5–3.0 kW — significantly higher than the 0.3–0.6 kW that suffices for K325 accumulation zones of the same length.
Tension Calculation at Maximum Width
At K1200, the chain tension calculation is the most important design step before committing to the specification. The accumulated chain weight over 12 m, combined with the product load and chain-to-rail friction on the return strand, can approach the 2,750 N working load at maximum product load conditions. EverPower provides tension calculation assistance for K1200 projects as a standard part of the supply process — do not specify LBP821-K1200 without a confirmed tension calculation for your specific conveyor length and product load.
Applications That Drive the K1200 Specification
Wine and spirits bottling is the primary K1200 application in Australia. A typical 750 ml wine bottle line running at 8,000–12,000 bottles per hour organises bottles in multiple parallel files (typically 5–6 files) across the accumulation zone to achieve the required buffer capacity in a given floor length. At 5 files with 750 ml glass bottles (approximately 1.3 kg each, 5 files at 0.12 m/bottle = approximately 54 kg/m²), the product load per metre of K1200 chain is approximately 13 kg/m. LBP821-K1200 handles this load within its working load rating over a 10-metre accumulation run, providing a buffer capacity of approximately 450–540 bottles — equivalent to approximately 2.5–3 minutes of filling time at 12,000 bottles/hour.
Wide-format case accumulation in large distribution centres is the second major application — typically five-file standard case accumulation (300–400 mm case footprint, 5 files across 1,200 mm) ahead of sortation systems and pallet build stations. The K1200 roller chain keeps back-pressure below case deformation thresholds for corrugated cardboard cases at the rated accumulation zone length, while the single-chain-strand architecture simplifies the conveyor control system compared to parallel-strand alternatives.
Matched Components EverPower Supplies
| Component | Description | Availability |
|---|---|---|
| LBP821-K1200 Double Hinge Sprockets | K1200 roller-clearance, reinforced tooth profile | Stock on request |
| Replacement POM Rollers (K1200) | LBP821-K1200 roller and axle unit sets | Stock on request |
| LBP8257 Heavy Duty (K750/K1000) | PA66 roller for extreme product load applications | Stock on request |
| LBP821-K1000 Narrower Width | For applications where K1000 is the correct width | Stock on request |
What Our Customers Say
“LBP821-K1200 six-file wine bottle accumulation, 10 metres. We had been using three parallel K400 roller chain strands — the synchronisation between the three independent drive motors caused periodic cross-file misalignment that jammed the downstream orientator. Single K1200 chain eliminated the synchronisation problem entirely. No jams in eight months.”
— Conveyor Systems Engineer, Wine Bottling, Barossa Valley SA
“EverPower ran the tension calculation for our 10-metre K1200 installation with 13 kg/m glass bottle load. The result was 2,380 N — within the 2,750 N working load but with a margin we were comfortable with. We specified correctly based on their calculation, not on a rule-of-thumb guess. The chain is performing exactly as the calculation predicted.”
— Mechanical Engineer, Spirits Bottling, Sydney NSW
“The reinforced link plate at K1200 is what prevents lateral sag when the zone loads up asymmetrically at startup. We load from the left file first, and the right side of the chain is always lighter during the first 30–60 seconds. Standard K1200 chains we trialled from another supplier sagged on the right side during this period. LBP821-K1200 stays flat across the full width.”
— Production Manager, Wide-Format Case Accumulation, Melbourne VIC
