Drive Belt A1400 (A55) Remeza LB40 — V-belt A55, for СБ4/С-100.LB40, genuine, Moldova

A problem you have already faced

• Belt snapped mid-shift — the compressor stopped, the pneumatic line went dead, production halted over a single consumable part worth a few hundred lei.
• Bought an ‘A55’ from another supplier — didn’t fit — the A55 designation per RMA/MPTA corresponds to Lw = 1397 mm, while the genuine LB40 belt has Lw = 1400 mm: a 3 mm difference causes incorrect tension and premature wear.
• Belt squeals and overheats after 20 hours — sign of incorrect tension or pulley misalignment: on LB40 the pulley bolt torque is 30–35 N·m, belt deflection — 12–18 mm at a force of 5 kgf.
• Supplier offers a ‘universal substitute’ without a part number — without confirmed Lw and profile, the replacement is a gamble.
• Belt replaced only when it snaps — planned service life 1000–1500 h; unplanned downtime costs more than several spare belts.

A snapped belt on the LB40 is not just downtime. Sudden load release can cause a hydraulic shock in the valve group, which multiplies the repair cost many times over.

What is the A1400 (A55) belt

A drive V-belt is a consumable part of the belt drive on a piston compressor. It transmits torque from the motor pulley to the LB40 piston block pulley, providing the required transmission ratio and reducing block speed.

A1400 designation breakdown:

• A — belt profile, cross-section 13×8 mm per GOST 1284-89 and ISO 4184; standard profile for compressors rated 2.2–5.5 kW;
• 1400 — calculated length along the neutral line (Lw/Lp), mm; outside length (La) = 1450 mm;
• (A55) — designation per inch standard RMA/MPTA: 55 inches outside circumference (La ≈ 1397 mm); the slight difference from Lw = 1400 mm requires verification when selecting an alternative.

Part number history (confirm at time of order):

• The belt is designated A1400 or A55 depending on the marking system used;
• The RMA/MPTA inch equivalent — A55 (La = 1397 mm, Lw = 1384 mm) — requires checking the motor slide travel before ordering;
• Confirm the current part number with the Acvatron manager on the day of enquiry.

A1400 Belt Technical Specifications for LB40

💡 Expert tip: On the LB40 block the centre distance between pulleys is greater than on the LB30, so the motor slide travel available to compensate belt length tolerance is also greater. If an A55 belt (Lw = 1384 mm) fails to achieve the required tension, it means the slide travel is already at its limit: a belt with strictly Lw = 1400 mm is required.

Compatible Compressor Models

A1400 Belt Alternatives by Brand

⚠️ Important: the A55 designation per RMA/MPTA corresponds to La ≈ 1397 mm and Lw ≈ 1384 mm. The difference from A1400 (Lw = 1400 mm) is 16 mm. On the LB40 block with limited motor slide travel, A55 may not achieve the required tension. Always specify Lw = 1400 mm when ordering an alternative.

5 mandatory parameters for compatibility verification:

1. Profile (cross-section) — LB40 accepts only profile A (13×8 mm); profile B (17×11 mm) does not fit geometrically.
2. Calculated length Lw — must be 1400 mm (±tolerance +8/−4 mm per GOST 1284-89); A55 at Lw = 1384 mm requires tension verification.
3. Motor slide travel — if travel is already at maximum, a belt shorter than 1400 mm will not achieve sufficient tension: strictly A1400 is required.
4. Cord material — polyester: stable length under load without stretching. Cotton cord stretches and requires frequent re-tensioning.
5. Quantity per assembly — one belt per LB40 block; keep 1–2 units in your spare-parts stock.

Why Acvatron SRL — 5 solid arguments

Genuine parts with confirmed part numbers

Acvatron SRL supplies the A1400 belt with confirmed Lw = 1400 mm for LB40 and LB40A blocks. You receive a part with known characteristics and full confidence in compatibility — no surprises at installation.

Engineering selection by compressor model

Give us the full designation of your compressor (e.g. СБ4/С-100.LB40A) — the Acvatron engineer confirms on the day of enquiry that the A1400 is the correct part for your specific model, or provides the right part number.

In-stock availability in Chisinau

Belts for LB40 and LB40A blocks are permanently in stock at acvatron.md. Collect on the day of payment — no waiting for transit shipments from Belarus or Russia.

Full spare-parts range for Remeza AirCast

Acvatron SRL supplies the complete range of spare parts for Remeza compressors: belts, oil, air filters, valve plates, piston rings, oil-level gauges. Everything for maintenance and repair — in one place.

Documents for legal entities

All parts are supplied with full shipping documentation. For legal entities — tax invoice and supply contract.

Applications

Planned preventive maintenance

• Belt replacement as part of scheduled service every 1,000–1,500 operating hours on LB40-series compressors
• Building an emergency spare-parts stock: 1–2 A1400 belts in the workshop, garage or production facility store
• Planned shutdown with no emergency downtime — predictable maintenance costs

Emergency repair

• Belt replacement after failure on a compressor in a garage, service workshop or production facility
• Restoring compressor operation on the day of failure if the belt is held in the spare-parts stock
• Repair after drive overheating due to incorrect tension or worn pulleys

Service organisations

• Field servicing of Remeza AirCast LB40 compressor fleets in Moldova
• Spare-parts standardisation by block: a single A1400 part number covers all LB40 and LB40A variants
• Planned service contracts with predictable consumable replacement schedules

Expert opinion

Vitaliy Boluchevsky, Chief Engineer at Acvatron SRL, 15 years in the industry:

On the LB40 block I regularly see the same mistake: an A55 belt is fitted instead of A1400 without checking the slide travel. The 16 mm difference in Lw is not a minor detail — the belt will either fail to reach the required tension and start slipping from the first hours, or it will be overtightened, overloading the crankshaft bearings. The second point: after fitting a new belt, always re-check tension after 8–10 operating hours. A new belt stretches initially. Deflection at 5 kgf at mid-span should be 12–18 mm. Do not skip this check.

Applicable standards: GOST 1284-89, ISO 4184, DIN 2215; Remeza AirCast СБ4/С series Operation Manual, section ‘Maintenance’

How to replace the A1400 belt on the LB40 block correctly: 6-step procedure

6. Isolate the compressor — switch off the circuit breaker, confirm receiver pressure is at zero; remove the belt drive guard.
7. Release belt tension — slacken the motor mounting bolts on the slides and push the motor towards the block until the belt is fully slack.
8. Remove the old belt and inspect the pulleys — examine wear pattern: cracks on the sides — overtension; glazed running surface — slipping; edge delamination — material fatigue. Check pulley grooves: maximum permissible wear 2 mm.
9. Fit the new A1400 belt — place the belt over the pulleys by hand, without levers or pry bars; push the motor along the slides until the correct tension is reached: deflection 12–18 mm at 5 kgf force at mid-span; tighten motor mounting bolts to 30–35 N·m.
10. Check pulley alignment and start the compressor — hold a straight-edge against the pulley faces: maximum misalignment 1 mm; start the compressor and verify no squeal or vibration.
11. Re-check tension after 8–10 operating hours — a new belt stretches initially; re-tension if deflection exceeds 18 mm.

Handling typical objections

“I’ll buy any A55 — same belt”

A55 per RMA/MPTA has Lw ≈ 1384 mm — 16 mm shorter than A1400 (Lw = 1400 mm). On the LB40 block with limited slide travel, this difference is critical: the belt will either slip due to insufficient tension or overtighten the bearings. Use only A1400 with Lw = 1400 mm — or verify slide travel with the Acvatron engineer first.

“I’ll take a cheap substitute with no part number”

The main risk is an unstable calculated length: even with the correct profile A, a deviation of +20 mm leads to overtension and accelerated LB40 crankshaft bearing wear. A belt with confirmed Lw = 1400 mm (GOST 1284-89 tolerance: +8/−4 mm) is the only safe replacement.

“I cannot find the right part number for the LB40”

The LB40 belt is sold under the designation A1400 or A55. Call Acvatron SRL — the manager will confirm the current part number and in-stock availability in Chisinau on the day of your enquiry. Simply state your compressor model (e.g. СБ4/С-100.LB40A) and we will do the rest.

Frequently asked questions

❓ How often does the belt need replacing on a Remeza LB40 compressor?

The planned service life of the drive belt for the LB40 block is 1,000–1,500 operating hours at correct tension and normal operating conditions (ambient temperature +5…+40°C, protected from oil and aggressive vapours). Under intensive duty (DC 80–100%) the interval reduces to 700–800 hours. Inspect the belt every 250 operating hours or quarterly: check for cracks, delamination and side wear. Preventive replacement is cheaper than emergency downtime.

❓ What is the difference between A1400 and A55?

A1400 is the metric designation (Lw = 1400 mm per GOST 1284-89 / ISO 4184). A55 is the inch designation per the US RMA/MPTA standard: 55 inches outside circumference, corresponding to Lw ≈ 1384 mm. The difference in calculated lengths is 16 mm. For the LB40 block with its original centre distance, the correct belt is A1400 (Lw = 1400 mm). A55 (Lw = 1384 mm) requires verification of the motor slide travel.

❓ Is the A1400 belt suitable for the Remeza LB40A compressor?

Yes. The LB40 and LB40A blocks are constructionally identical in terms of the belt drive: same pulley diameters, same centre distance. The letter ‘A’ in LB40A denotes only the presence of an automatic unloader valve on shutdown — it has no effect on the drive belt. The A1400 belt is suitable for both variants.

Take the next step right now

A snapped belt during working hours means unplanned downtime and an urgent hunt for a spare part. One belt in your spare-parts stock eliminates this problem once and for all.

12. 📞 Call us — the Acvatron SRL engineer will confirm A1400 belt availability in Chisinau stock and compatibility with your compressor model.
13. 📋 Receive a commercial offer — with designation, Lw, price and documents. Tax invoice and contract for legal entities.
14. 🛒 Place your order by phone or at the office — collect from the Chisinau warehouse on the day of payment.

Acvatron SRL — an engineering approach to every sale.