Digamber Polymers designs and moulds plastic spools and bobbins for wire, cable, optical fibre and monofilament, under the Spoolz name — built in Greater Noida, precise to the millimetre.
Founded in 1996 by Mr. Sunil Jain, a textile engineer by training, Digamber Polymers grew into one of the few fully integrated manufacturers of plastic spools for the electrical industry — design, tooling, and moulding, all handled in-house.
Our unit in Greater Noida runs machines from Electronica and Toyo with clamping capacities from 80 to 530 tons, covering everything from a small PT-1 bobbin to a 355mm monofilament spool without switching suppliers.
500+ tons of plastic recycled annually, back into new spools.
Colour, branding, and material grade tailored to how it's used.
Built for repeated handling and long production runs.
Built for winding and transporting electric cables, monofilaments, fibre-optic cables, stranded and copper wires, metal tapes, and wire ropes.
High wire-carrying capacity for continuous coil and copper winding lines.
Consistent pay-off for MIG/MAG welding wire on automated and semi-automated lines.
Rugged flanges built for rough handling during export and storage.
Consistent-diameter spools that feed smoothly through FDM/FFF printer extruders.
Precision winding surfaces that protect fine fibre from micro-bends in transit.
Clean, consistent moulding suited to controlled, sterile production runs.
From heavy-duty transport bobbins to spools built for automated welding lines, each series is engineered and moulded in-house.
Rugged bobbins built for maximum wire-carrying capacity and repeated handling through transport, storage, and export — PT-1 through PT-60.
Moulded to globally recognised DIN dimensions and tolerances, so they drop straight into existing winding and automation lines — DIN-80 through DIN-355.
Sized for MIG/MAG welding wire, holding consistent pay-off tension for automated and semi-automated welding equipment.
A closer look at the bobbins, materials, and factory floor behind every dispatch.
| Spool | d1 / D1 | d2 / D2 | Bore d3 | L1 | L2 | Weight (g) | Copper (kg) |
|---|---|---|---|---|---|---|---|
| PT-1 | 95 / 105 | 53 / 58 | 20 | 120 | 100 | 102 | 1 |
| PT-4 | 125 / 140 | 74 / 86 | 26 | 200 | 170 | 280 | 4 |
| PT-10 | 160 / 180 | 96 / 110 | 30 | 230 | 200 | 420 | 10 |
| PT-15 | 180 / 200 | 96 / 110 | 30 | 230 | 200 | 575 | 15 |
| PT-20 | 210 / 225 | 132 / 150 | 32 | 280 | 200 | 850 | 20 |
| PT-25 | 215 / 230 | 110 / 130 | 32 | 280 | 250 | 950 | 25 |
| PT-35 | 235 / 250 | 110 / 130 | 32 | 300 | 270 | 1050 | 35 |
| PT-45 LW | 236 / 250 | 140 / 160 | 100 | 400 | 335 | 1300 | 45 |
| PT-45 HW | 236 / 250 | 140 / 160 | 100 | 400 | 335 | 1850 | 45 |
| PT-60 | 265 / 300 | 150 / 180 | 45 | 400 | 350 | 1600 | 60 |
| Spool | d1 flange | d2 barrel | Bore d3 | L1 | L2 | Weight (g) | Copper (kg) |
|---|---|---|---|---|---|---|---|
| DIN-80 | 80 | 50 | 16 | 80 | 64 | 65 | — |
| DIN-100 | 100 | 60 | 16 | 100 | 80 | 120 | — |
| DIN-125 | 125 | 83 | 16 | 125 | 100 | 200 | — |
| DIN-160 | 160 | 100 | 22 / 32 | 160 | 127 | 395 | 7 |
| DIN-200 | 200 | 125 | 22 / 32 | 200 | 160 | 660 | 14 |
| DIN-250 | 250 | 160 | 22 / 32 | 200 | 160 | 1020 | 22 |
| DIN-335 | 335 | — | — | — | — | — | — |
| DIN-355 | 355 | 224 | 36 | 200 | 160 | 1850 | 48 |
Other sizes available on request — share your spool dimensions or a sample for a faster response.
| Spool | Flange d1 | Barrel d2 | Bore d3 | L1 | L2 | Weight (g) | Wire capacity (kg) |
|---|---|---|---|---|---|---|---|
| SD270 | 270 | 140 | 22 / 32 | 200 | 160 | 620 | 10 |
| SD300 | 300 | 160 | 22 / 32 | 200 | 160 | 750 | 15 |
MIG series sizes shown are indicative — share your welding wire diameter and pay-off needs and we'll confirm the right spool.
Finished spools are stacked, banded, and palletised before they leave the floor — built to survive the trip, whether that's across the state or across the world.
Yes — we manufacture coloured spools and lids so customers can tell batches apart in inventory. Coloured variants can carry a slightly higher cost and longer lead time.
Yes. We offer custom branding on request, typically engraved or moulded directly into the flange or lid so it holds up over the spool's working life.
Pricing depends on raw material prices, batch quantity, and spool size and material grade. Send us your specifications and we'll quote accurately.
Certain lubrication and protection oils attack PPCP and ABS chemically over time. For oiled monofilaments or heavy-lubrication environments, we recommend glass-filled polyamide (PA) spools, which hold up better both mechanically and chemically.
There's no fixed figure — it depends on the number of reuses, material, output tension and RPM, contact with oils or chemicals, and temperature. In practice, spools last anywhere from under a year to over twenty, depending on how they're used.
Retire a spool immediately if the flanges are cracked, the barrel has elongated, warping or deformation is visible, or its mechanical strength is in doubt. A visual check before every reuse is good practice.
Yes — lightweight, cost-optimised spools built mainly for a single transport cycle, though depending on the application they may hold up for reuse too.
PT Series bobbins are purpose-built for rugged handling through transport and export, while our DIN and MIG spools are moulded to the standards winding lines expect anywhere in the world.
Share your spool dimensions or an existing sample and we'll help with material selection, geometry, and OEM branding.