#240 Makaralı Zincir Dişlileri | A Plakası B Göbek C Göbek – 10 ila 60 Diş, 3 İnç Adım

Makaralı Zincir Dişlileri 3

Kore'nin Daimi Gücü #240 roller chain sprockets are built for the most demanding low-speed, high-torque drives in industrial service. At 3-inch pitch (76.2 mm), the heaviest C-hub 60-tooth unit weighs 1,419 lb with an outside diameter of 59.040″ — these are the sprockets used in primary drives for heavy presses, large cement kilns, bulk ship unloaders, and major konveyör zinciri head shafts where nothing smaller is mechanically adequate.

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#240 Chain Sprockets — The Largest ANSI Standard Drive Series

#240 is the largest chain size in the ANSI B29.1 standard roller chain series. The 3-inch pitch (76.2 mm) and correspondingly large roller and pin dimensions give #240 chain a tensile strength of approximately 400,000 lbf (181 tonnes) per strand — over twice that of #180 chain. This places #240 firmly in the category of primary drives for the largest industrial installations: main conveyor belt drives at bulk material terminals, rotating kiln drives at cement plants, primary press drives in forging operations, and ship unloader main drives at Korean port facilities.

Makaralı Zincir Dişlileri 3

At this scale, sprocket procurement is not a routine maintenance purchase — it is a capital planning item. Korea Ever-Power maintains stock of standard #240 sprockets in A-plate, B-hub, and C-hub configurations and offers the custom bore machining service required to fit these sprockets to the non-standard shaft diameters common in original equipment. SAE 1045 steel with heat-treated hardened teeth is standard, providing the margin over common 1018-grade material that the operating loads in these applications demand.

  • ⚙Chain: ANSI #240 — pitch 3.000″ (76.2 mm), roller dia 1.874″, inner width 1.875″
  • ⚙A-plate: 10–60 teeth, OD 11.030″–59.040″, weight 30.0–1,268.0 lb
  • ⚙B-hub: 10–25 teeth; C-hub: 30–60 teeth, max weight 1,419 lb (240C60)
  • ⚙Material: SAE 1045 steel, heat-treated hardened teeth, ANSI B29.1 compliant

#240 heavy duty chain sprocket drive system large industrial

#240 A-Plate Sprocket Specifications

A-plate #240A sprockets are flat-disc configuration with no hub. The "(D)" column shows the maximum bore diameter for the plain plate body. Note that even at 10 teeth (OD 11.030″, weight 30 lb), these are substantial components — handling equipment is required from the 20-tooth size upward. All dimensions are ANSI B29.1 nominal in inches; weight values are approximate and may vary by ±5% depending on final bore dimension.

Dişli Boyutu Dişler Tip Dış Çap (inç) Stok Delik Maksimum Çap (D) Ağırlık (lb)
240A10 10 A 11.030 1-1/2″ 9.200 30.0
240A11 11 A 12.020 1-1/2″ 10.020 37.0
240A12 12 A 13.000 1-1/2″ 10.830 45.0
240A13 13 A 13.970 1-1/2″ 11.640 54.0
240A14 14 A 14.940 1-1/2″ 12.460 62.0
240A15 15 A 15.910 1-1/2″ 13.260 68.0
240A16 16 A 16.880 1-1/2″ 14.070 82.0
240A17 17 A 17.850 1-1/2″ 14.870 93.0
240A18 18 A 18.810 1-1/2″ 15.680 108.0
240A19 19 A 19.780 1-1/2″ 16.480 120.0
240A20 20 A 20.740 1-1/2″ 17.290 128.0
240A21 21 A 21.710 1-1/2″ 18.090 148.0
240A25 25 A 25.550 1-1/2″ 18.890 208.0
240A30 30 A 30.340 1-1/2″ 19.690 310.0
240A35 35 A 35.130 1-1/2″ 20.490 416.0
240A40 40 A 39.920 1-1/2″ 21.290 548.0
240A45 45 A 44.700 1-1/2″ 22.090 702.0
240A54 54 A 53.310 1-1/2″ 23.690 1,022.0
240A60 60 A 59.040 1-1/2″ 25.290 1,268.0

#240 B-Hub Sprocket Specifications

B-hub #240B sprockets carry a single hub on one face, extending shaft engagement for keyway retention. The B-hub series covers 10–25 teeth — all smaller sprockets that function as driver units on main shaft positions. Hub diameter and length-through-bore values must be checked against available shaft clearance and bearing face distance before specifying; these are large components with substantial hub projections.

Boyut Dişler OD (içinde) Stok Delik Maksimum Delik Göbek Çapı. Delik Boyu Ağırlık (lb)
240B10 10 11.030 1-1/2″ 4-1/2″ 6-1/2″ 3-3/8″ 49.0
240B11 11 12.020 1-1/2″ 4-3/4″ 7 inç 3-7/8″ 66.0
240B12 12 13.000 1-1/2″ 5-3/8″ 7-1/2″ 3-7/8″ 72.0
240B13 13 13.970 1-1/2″ 5-3/8″ 7-1/2″ 3-7/8″ 81.0
240B14 14 14.940 1-1/2″ 5-3/8″ 7-1/2″ 3-7/8″ 88.0
240B15 15 15.910 1-1/2″ 5-3/8″ 7-1/2″ 4-1/8″ 101.0
240B16 16 16.880 1-1/2″ 5-3/8″ 7-1/2″ 4-1/8″ 115.0
240B17 17 17.850 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 131.0
240B18 18 18.810 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 147.0
240B19 19 19.780 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 161.0
240B20 20 20.740 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 169.0
240B21 21 21.710 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 186.0
240B25 25 25.550 1-1/2″ 5-1/2″ 8 inç 4-1/8″ 254.0

#240 C-Hub Sprocket Specifications

C-hub #240C sprockets carry hub projections on both faces. The 30–60 tooth range listed here represents the driven-end sprockets in major industrial reduction drives. The 240C60 at 1,419 lb with 59.040″ OD and 6-3/4″ bore length requires heavy-lift crane equipment for installation — plan lifting points, access routes, and shaft clearance before confirming an order for these units.

Boyut Dişler OD (içinde) Stok Delik Maksimum Delik Göbek Çapı. Delik Boyu Ağırlık (lb)
240C30 30 30.340 1-1/2″ 6 inç 9 inç 6-1/4″ 398.0
240C35 35 35.130 1-1/2″ 6 inç 9 inç 6-1/4″ 527.0
240C40 40 39.920 1-1/2″ 7 inç 10″ 6-3/4″ 672.0
240C45 45 44.700 1-1/2″ 7 inç 10″ 6-3/4″ 850.0
240C54 54 53.310 1-1/2″ 7 inç 10″ 6-3/4″ 1,148.0
240C60 60 59.040 1-1/2″ 7 inç 10″ 6-3/4″ 1,419.0

#240 C-hub sprocket heavy industrial large diameter drive

#240 vs. #180 — When to Step Up to the Larger Pitch

Both #180 and #240 are heavy industrial chain sizes. The decision between them is primarily about transmitted power at the available shaft speed. Here is a direct comparison to help clarify when #240 is the appropriate specification:

Özellikler #240 (Korea Ever-Power) #180 (for comparison)
Saha 3.000″ (76.2 mm) 2.250″ (57.15 mm)
Silindir çapı 1.874″ 1.406″
Approximate breaking load ~400,000 lbf (181 tonnes) ~160,000 lbf (73 tonnes)
Max recommended chain speed ~2.5 m/s (low-speed, high-torque) ~3.5 m/s
Heaviest sprocket in range 1,419 lb (240C60) 489 lb (180C60)
Typical application Kiln drives, ship unloaders, major press drives Steel mill auxiliary, mining conveyors
Choose #240 when… #180 is too marginal at your torque and speed combination, or total transmitted load exceeds 70 tonnes Power requirement is within #180 rating with adequate safety factor

When total drive power exceeds the #180 chain rating at your operating speed, the next step is single-strand #240 — not multi-strand #180. Multi-strand arrangements multiply alignment complexity and introduce synchronisation requirements that single-strand #240 avoids entirely.

#240 chain drive power transmission ratio torque calculation

Procurement Planning for #240 Sprockets — What to Prepare Before Ordering

Ordering a large #240 sprocket is not the same process as ordering a standard #40 or #60 unit off the shelf. The weight, dimensional complexity, and custom bore requirements mean that thorough preparation before inquiry will result in a faster and more accurate order process.

📋 Technical Information to Have Ready

Before contacting us for a #240 sprocket quote, have the following confirmed: (1) sprocket size code from the tables above or from the existing sprocket nameplate; (2) finished bore diameter in inches to three decimal places; (3) keyway dimensions — width, depth, and length per ASME B17.1, or attach a drawing; (4) number and thread size of set screw tappings; (5) whether a Certificate of Conformance or dimensional inspection report is required; (6) delivery address and whether the unit needs special crating for export or long-distance domestic shipping.

🏗 Site Preparation for Installation

A 240C54 sprocket at 1,148 lb and 53.310″ outside diameter requires crane access and a clear path from delivery vehicle to the installation position. Ensure: overhead crane capacity of at least 2,000 lb (1 tonne); a sling or lifting beam rated for the sprocket weight; horizontal shaft support at installation height; and shaft end protrusion sufficient for sprocket engagement length plus clearance for the bore to pass completely over the shaft. Check the hub length-through-bore dimension against available shaft length — the bore must pass fully onto the shaft before keys can be fitted.

📅 Lead Time Expectations

Standard-bore #240 sprockets in A-plate and B-hub configurations are held in stock for 7–14 day Korea delivery. C-hub units are typically stocked in the most common tooth counts (30, 35, 40T); less common counts (45, 54, 60T) may require 15–20 business days for production and bore machining. Custom bores on any unit add 5–10 business days to the stock lead time. For shutdown-critical applications, contact us at least 4–6 weeks before the planned installation date to ensure delivery without schedule risk.

Industrial Applications for #240 Chain Sprockets in Korea

⚓ Port Bulk Terminal Equipment

Ship unloaders, stacker-reclaimers, and bulk belt conveyor head drives at Korean port terminals — Busan, Incheon, Gwangyang — use #240 chain on main drive shafts where the combination of continuous high torque and very low speed is the standard operating condition. A typical ship unloader main drive turns at 8–15 rpm with a torque exceeding 50,000 Nm, which falls comfortably within #240's working load envelope.

🏭 Rotary Kiln and Cement Equipment

Rotary kiln auxiliary (slow roll) drives at cement plants use #240 chain and sprocket to turn the kiln at maintenance speed — typically 0.3–1 rpm — for inspection, brick replacement, and seal work. The drive must produce sufficient torque to overcome kiln inertia and static resistance while protecting the kiln gear ring from shock. A C-hub 240C40 or 240C45 on the slow-roll shaft is a typical specification at Korean cement plant installations of this type.

⚒ Heavy Press and Forging Equipment

Large eccentric press drives and hydraulic forging line transfer conveyors use #240 chain where the operating cycle involves extreme intermittent shock loading at very low speed. The 3-inch pitch provides the cross-sectional area needed to absorb these shock peaks without approach to tensile limit. B-hub units on the motor-side shaft and C-hub on the press flywheel or crankshaft are the standard configuration at Korean heavy forging facilities.

 

Dişli çark ve zincir uygulaması 3

Matching #240 Heavy Duty Roller Chain

#240 ANSI roller chain 3 inch pitch heavy industrial matching chain

Korea Ever-Power stocks ANSI #240 heavy duty roller chain — 3-inch pitch, supplied in standard 10-foot lengths with offset links — to pair with the sprockets above. At this chain size, connecting link assembly requires specific tooling and should be performed by trained mechanical personnel. Contact our technical team for chain length calculations when the centre distance is confirmed; #240 chain is not cut-to-length in the same manner as smaller chains and the link count must be confirmed before chain is shipped.

For a complete technical reference on specifying #240 drives including power rating calculations, shaft load analysis, and installation guidance, our engineering team provides pre-order technical consultation. Further reference on heavy duty chain and sprocket systems selection is available for large-scale industrial projects.

Neden Kore Ever-Power Zincir ve Dişli Takımı

Korea Ever-Power heavy industrial sprocket manufacturing facility #240

Korea Ever-Power Chain and Sprocket Co., Ltd. maintains stocked inventory of #240 sprockets and provides the full technical support and machining capability for these large-scale industrial components:

✦A-plate, B-hub, and C-hub stocked — standard tooth counts across all three configurations available without special-order delays for most sizes
✦SAE 1045 with heat-treated teeth — essential for large-pitch drives where tooth impact loads at even slow speeds are substantial
✦Large-bore custom machining capability — bores up to 7″ (C-hub 40–60T) machined to customer drawings with ASME B17.1 keyways and dual-key configurations
✦Documentation package available — material certificate (MTR), dimensional inspection report, CoC — standard for critical industrial procurement requirements
✦Heavy crating and special packaging — units above 500 lb shipped with appropriate crating for domestic Korea delivery and international export
✦Pre-order engineering consultation — shaft load calculation review, #240 vs #180 specification confirmation, and installation planning guidance at no charge

Sıkça Sorulan Sorular

At what power level should I consider #240 instead of #180 single-strand?
As a practical threshold: when your calculated #180 chain tight-side tension exceeds 60% of the ANSI-rated working load (approximately 27,000 lbf for #180), step up to #240 rather than applying a second strand. Multi-strand #180 complicates alignment and load sharing. A single #240 strand at the same speed handles the equivalent of approximately 2.5 strands of #180, with better reliability in demanding environments. Provide your kW requirement, shaft speed (rpm), and service factor, and our technical team will confirm which standard is appropriate.
What is the maximum bore available for a 240C60 sprocket?
The 240C60 has a maximum bore of 7 inches. The hub diameter is 10 inches and length through bore is 6-3/4 inches. For shaft diameters larger than 7 inches at this sprocket size, we can supply a special fabricated hub configuration on a custom basis — contact us with your specific shaft diameter and we will assess feasibility. Note that the 7-inch bore is the maximum for a standard ASME B17.1 parallel key; larger bores would require an alternative retention method such as a shrink-fit or hydraulic coupling, which we can advise on.
What is the difference between the A-plate stock bore (1-1/2″) and the maximum bore in the table?
The stock bore (1-1/2 inch) is the as-manufactured pilot bore — it is a locating bore used during machining, not the functional bore. All A-plate #240 sprockets with a maximum bore listed in the "(D)" column are supplied with the 1-1/2 inch pilot bore only; the final bore to your shaft diameter must be machined before installation. The maximum bore listed represents the largest bore that can be machined through the plate body while maintaining structural integrity. For A-plate units where the plate body itself is the bore carrier (no hub), this maximum bore can be quite large relative to the outside diameter — the 240A60 allows a 25.290-inch bore on a 59.040-inch OD plate.
How do I align a #240 sprocket drive with both components weighing over 400 lb?
Alignment is performed using a laser alignment tool or straight edge after both sprockets are in their final positions but before the chain is fitted. The midplanes of both sprockets must be parallel within 0.5 mm per 100 mm of centre distance. Offset (axial misalignment between shaft centrelines) must be within 0.5 mm. Angular misalignment (shaft axes not parallel) is the harder error to detect and correct — use a laser alignment system or dial indicator on a bridge gauge across both shaft faces. Large heavy sprockets amplify the consequences of misalignment because the chain tension and friction forces are so high that even 1° of angular error produces visible tooth wear within a few thousand operating hours.
What tooth count combination do you recommend for a 5:1 reduction drive using #240?
For a 5:1 ratio: 13T driver with 65T driven would be ideal but 65T is outside our standard range, so the nearest practical combination is a 12T driver with 60T driven (240B12 / 240C60) — giving a 5:1 ratio exactly. The 12T driver is an induction-hardened B-hub unit; the 240C60 is the C-hub driven sprocket at 1,419 lb. Alternatively, a 2-stage reduction is worth considering if the size and weight of the 240C60 presents installation challenges — a 2-stage with smaller sprockets may be more practical to install and maintain while achieving the same overall reduction ratio.
Does Korea Ever-Power supply #240 chain and sprocket as a matched system?
Yes. We stock #240 chain to ANSI B29.1 as standard supply alongside the sprockets listed above, and can supply both components with a single purchase order. For the drive system to be fully specified, we need: motor power (kW), motor shaft speed (rpm), required output speed or gear ratio, service factor (smooth / moderate shock / heavy shock), and centre distance. We will return the recommended chain size, sprocket tooth counts, and required chain link count. If the #240 turns out to be oversized for your actual power requirement, we will say so — recommending a #180 system instead if the engineering calculation supports it.

Müşteri Yorumları

Kore ve çevre pazarlardaki müşterilerden alınan doğrulanmış geri bildirimler.

Kim Sang-woo, Senior Mechanical Engineer, Port Terminal Company, Busan (early 2025)

"We specified 240B15 and 240C45 for a ship unloader main drive refurbishment at our Busan facility. Korea Ever-Power supplied both with custom bores — 4.5-inch on the B-hub and 6.5-inch on the C-hub — machined to our drawings. The CoC and material certificates were included in the shipment as requested. Components arrived within the 18-day window we agreed on, which met our maintenance schedule."

Cho Byung-kwan, Chief Engineer, Cement Plant, North Gyeongsang Province (2024)

"Kiln auxiliary drive slow-roll sprocket replacement — we needed 240C35 with a 5-inch bore and dual keyways. Korea Ever-Power machined both keyways 180 degrees apart as per ASME B17.1 with the correct tolerances. The technical team confirmed our keyway specification before machining, which avoided the tolerance error we had with our previous supplier. Sprocket has been in service for nine months without issues."

Lee Hyun-sik, Procurement Director, Industrial Plant Engineering Company, Seoul (Q2 2024)

"We manage equipment procurement for multiple heavy industrial clients across Korea. Korea Ever-Power is now our standard source for #180 and #240 sprockets. The combination of stock availability, custom machining capability, and documentation provision covers everything our clients need for these components. Delivery reliability over the past 14 months has been consistent — one delayed order in that period, which was communicated proactively rather than discovered at deadline."

Park Jae-hyun, Maintenance Manager, Aggregate Processing Plant, Gyeonggi-do (early 2025)

"Our primary crusher feed conveyor uses #240 chain with 240B14 and 240C40 sprockets. We replaced the full set during last year's annual maintenance. Korea Ever-Power supplied both units with standard bore from stock — no custom machining needed in this case. Lead time was 12 days. The hardened teeth on the 240B14 are holding up well considering the abrasive quarry dust environment; previous sprockets lasted about 14 months and we are currently at 11 months with no visible tooth wear approaching replacement threshold."

Yun Tae-jun, Project Engineer, Heavy Forging Facility, Ulsan (2025)

"New press line installation. We originally considered multi-strand #180 but the Korea Ever-Power engineering team recommended single #240 as simpler and more reliable for our specific torque and speed parameters. The pre-order consultation was thorough — they ran the numbers and explained why #240 was the right choice. Sprockets arrived on schedule, both with machined bores and single keyways per our specification."

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