
DONGHUA ASA 40 roller chain
- Brand
- DONGHUA
- Category
- Power transmission
- Subcategory
- Roller chains
- Size
- ASA 40
- Series
- ASA
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
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Description
DONGHUA ASA 40 is a reference of roller chain, within Power transmission. Request a quote for ASA 40 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The ASA 40 is one of the most widely used roller chains in medium-power industrial drives: 12.7 mm (half-inch) pitch, with a 7.95 mm roller and inner width, according to the DONGHUA listing.
With these dimensions, the ASA 40 transmits power between 40-pitch sprockets in conveyors, gearmotors, mixers and agricultural machinery. It is an intermediate pitch: lighter than the ASA 50 or ASA 60 for lower loads, and stronger than the ASA 35 when the power to be transmitted increases.
It is available in single, double or triple strand — two or three rows of rollers in parallel with the same pitch and pin — to increase transmission capacity without changing the base sprocket, provided the sprocket is designed for the number of strands you need.
When ordering, in addition to the pitch, confirm how many links you need — it is counted in pitches, not centimeters — and whether the run closes with a detachable connecting link or is riveted. Correct tension and alignment between the two sprockets greatly extend the service life of the chain.
Dimensions
- Standard
- ASA / ANSI
- Rows
- Single
- Pitch
- 12.7mm
- Roller Ø
- 7.95mm
- Inner width
- 7.95mm
Frequently Asked Questions
- Is the ASA 40 compatible with sprockets from other brands?
- Yes, the ASA pitch is standardized internationally. Any 40-pitch sprocket, ANSI standard, is compatible, regardless of the brand of the chain or the sprocket.
- What does a 12.7 mm pitch mean?
- It is the distance from the center of one roller to the next. That value, together with the roller diameter and the inner width, defines which sprocket matches.
- Can I order the ASA 40 in double or triple strand?
- Yes, it is available in all three versions: single, double and triple. Confirm that the sprocket you will use is designed for the number of strands you need.

