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Ultra Super Chain RF140-US-1

Model RF140-US-1 / ウルトラスーパチェーン / Tsubakimoto Chain Co. (Official website)

Heavy-duty drive chain with 44.45 mm pitch. Minimum tensile strength 273 kN, maximum allowable tension 63.7 kN.

Last verified: (date the content was verified against the source document)

Specifications

Pitch P 44.45 mm
Roller diameter R 25.40 mm
Inner link inner width W 25.40 mm
Plate thickness T 6.4 mm
Plate width H 42.2 mm
Pin diameter D 13.97 mm
Minimum tensile strength 273 (27800) kN (kgf)
Average tensile strength 314 (32000) kN (kgf)
Maximum allowable tension 63.7 (6500) kN (kgf)
Approximate mass 9.24 kg/m

ウルトラスーパチェーン model comparison

Compare 6 models in the same series by specification.

Model Pitch P Roller diameter R Inner link inner width W Pin diameter D Maximum allowable tension Minimum tensile strength Average tensile strength Plate thickness T
RF100-US-1 31.75 mm 19.05 mm 19.05 mm 10.32 mm 39.2 (4000) kN (kgf) 149 (15200) kN (kgf) 172 (17500) kN (kgf) 4.8 mm
RF120-US-1 38.10 mm 22.23 mm 25.40 mm 12.28 mm 53.9 (5500) kN (kgf) 213 (21700) kN (kgf) 245 (25000) kN (kgf) 5.6 mm
RF140-US-1 This product 44.45 mm 25.40 mm 25.40 mm 13.97 mm 63.7 (6500) kN (kgf) 273 (27800) kN (kgf) 314 (32000) kN (kgf) 6.4 mm
RF160-US-1 50.80 mm 28.58 mm 31.75 mm 15.62 mm 85.3 (8700) kN (kgf) 341 (34800) kN (kgf) 392 (40000) kN (kgf) 7.15 mm
RF200-US-1 63.50 mm 39.68 mm 38.10 mm 20.41 mm 108 (11000) kN (kgf) 580 (59100) kN (kgf) 667 (68000) kN (kgf) 9.5 mm
RF240-US-1 76.20 mm 47.63 mm 47.63 mm 24.73 mm 151 (15400) kN (kgf) 853 (87000) kN (kgf) 981 (100000) kN (kgf) 12.7 mm

How to choose Chain

Points to check when selecting, with the values for this product (RF140-US-1).

  1. 1. Select a pitch that matches the sprocket

    This product: Pitch P 44.45 mm

    The pitch must match the tooth profile of the sprocket, and different pitches cannot be combined. Listed products range from 31.75 to 76.2 mm. Larger pitches increase power transmission capacity, but they also add mass and cause greater vibration and noise at high rotational speeds, so the choice should be based on both rotational speed and load.

  2. 2. Check the load against the maximum allowable tension

    This product: Maximum allowable tension 63.7 (6500) kN (kgf)

    This is the upper limit of tension that may be applied in actual use. Multiply the chain tension calculated from transmitted power and speed by a service factor that accounts for starting shock and load fluctuation, and confirm that the result is at or below this value. Listed products range from 39.2 to 151 kN, and heavy-duty types have higher values even at the same pitch.

  3. 3. The minimum tensile strength is the guaranteed breaking value

    This product: Minimum tensile strength 273 (27800) kN (kgf)

    The minimum tensile strength is the guaranteed breaking load, and listed products range from 149 to 853 kN. The average tensile strength is a higher mean value than this, so the minimum value is used for strength calculations. It is not used as the basis for working load, but is used to check the safety margin against overload.

  4. 4. Verify the inner link width against the tooth width

    This product: Inner link inner width W 25.40 mm

    The inner link width corresponds to the tooth width of the sprocket. Some heavy-duty types can use sprockets for standard roller chains, but there are cases where cast iron sprockets are not permitted, so the tooth width and material conditions must be checked together.

  5. 5. Check compatibility by roller diameter and pin diameter

    This product: Roller diameter R 25.40 mm

    The roller diameter relates to the tooth bottom shape, and the pin diameter relates to connecting links and wear life. In some cases, successor specifications cannot be connected to previous specifications, so when partially replacing or adding links to an existing chain, dimensions and connectability should be verified against the manufacturer's documentation.

  6. 6. Confirm link count and lead time conditions

    Types without offset links (half links) can only be used with an even number of links, and allowance for adjusting the center distance is required. Also, some large-size products are made to order or quoted on each request, so spare parts procurement timing should be included in planning.

This guide was written by AI based on the listed products' documents and specification items.

About Chain and all products

Description

Single-strand heavy-duty drive chain. Used for ultra-heavy power transmission. No offset link; use with an even number of links. Made-to-order product.

Features

  • Made-to-order product
  • No offset link; use with an even number of links
  • Sprockets for RS roller chain can be used; cast iron sprockets cannot be used

Applications

  • Heavy-duty power transmission

FAQ

Q. Which type of sprocket can be used with the RF140-US-1?
A. Sprockets for RS roller chain can be used. Cast iron sprockets cannot be used.
Q. Does the RF140-US-1 use an even number of links or an offset link?
A. It has no offset link and is used with an even number of links.
Q. What is the strength of the RF140-US-1?
A. Minimum tensile strength is 273 kN (27800 kgf), and average tensile strength is 314 kN (32000 kgf). Maximum allowable tension is 63.7 kN (6500 kgf).
Q. What are the pitch, roller diameter, and plate dimensions of the RF140-US-1?
A. Pitch P is 44.45 mm, roller diameter R is 25.40 mm, and inner link inside width W is 25.40 mm. Plate thickness T is 6.4 mm, plate height H is 42.2 mm, and pin diameter D is 13.97 mm.
Q. What applications is the RF140-US-1 suited for?
A. It is used for heavy-duty power transmission. It is a single-strand heavy-duty drive chain for ultra-heavy power transmission.

Written by AI based on the content of the source documents.

Source documents

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