Drive Belt Remeza А1180 (4301104700) — V-belt A46.5, for СБ4/С-50.LB30, СБ4/С-100.LB30, Original

A Problem You’ve Already Faced

• The belt snapped mid-shift — the compressor stopped, the pneumatic line went down and work halted because of a single consumable part.
• Bought a “similar” belt — it didn’t fit — got an A1180 from another manufacturer, but it was 10–15 mm shorter or longer than the calculated length: when tensioning it either doesn’t reach the pulley or slips.
• The belt squeals and overheats — incorrect tension or a profile mismatch with the pulleys: profile A requires a pulley groove for a 13×8 mm section; substituting profile B (17×11 mm) is not permissible.
• The original part number isn’t available at the supplier — the supplier offers an “equivalent” without confirming compatibility by length and profile.
• Nobody knows when to replace it — the belt is only changed after it breaks, not preventively: the result is an unplanned stoppage instead of a scheduled service.

A snapped belt isn’t just downtime. A sudden load release can cause a hydraulic surge in the LB30 valve assembly, multiplying repair costs many times over.

What Is the А1180 Belt (4301104700)

The drive V-belt is a consumable part of the belt transmission in a piston compressor. It transfers torque from the electric motor pulley to the piston block pulley, reducing RPM and increasing torque according to the transmission ratio.

А1180 designation breakdown:

• А — belt profile (section 13×8 mm per GOST 1284-89, ISO 4184); standard profile for compressors rated 1.5–3.0 kW;
• 1180 — calculated length on the neutral line (Lw/Lp), mm; outer length (La) = 1230 mm;
• (A46.5) — designation per US RMA/MPTA standard: 46.5 inches on outer diameter.

Part number history:

• 4301104700 — current Remeza part number (active production);
• 03010009 — alternative part number (used in some parts breakdowns);
• 23611025 — aftermarket equivalent part number (compatible belt from third-party manufacturers).

All three designations refer to the same part: V-belt profile A, Lw = 1180 mm.

Technical Specifications

Compatible compressor models:

💡 Expert tip: before fitting a new belt, inspect the pulleys. Worn grooves (rounded edges, wear exceeding 2 mm) accelerate new belt wear by 3–4 times — replace the belt and pulley together. Torque for the pulley retaining bolt on the LB30 motor shaft: 25–30 N·m; under-tightening causes slipping and squealing within the first hours of operation.

Brand Equivalents

⚠️ Important: A46 (Lw = 1168 mm) and А1180 (Lw = 1180 mm) are different belts with a 12 mm difference in calculated length. On the LB30 block with a fixed motor slide travel, an A46 may not achieve the required tension at installation. Always verify Lw when ordering an equivalent.

5 essential parameters for checking compatibility:

1. Profile (section) — for the LB30, only profile A (13×8 mm); profile B (17×11 mm) is incompatible both geometrically and in terms of power transmission.
2. Calculated length Lw — must be 1180 mm (±GOST tolerance: +8/−4 mm); a length of 1168 mm (A46) requires checking the tension adjustment range.
3. Cord material — polyester cord maintains stable length under load; cotton cord stretches and requires frequent re-tensioning.
4. Wedge angle — standard 40° for profile A; if not matched, the belt does not seat fully in the pulley groove and overheats.
5. Quantity per assembly — the LB30 block uses 1 belt; it is recommended to keep 1–2 belts in the compressor’s spare parts kit.

Why Acvatron SRL — 5 Solid Reasons

Original Parts with Confirmed Part Numbers

Acvatron SRL supplies the belt under the current part number 4301104700 — not the discontinued 03010009 and not an “equivalent without documentation”. You receive a part with known specifications and guaranteed compatibility.

Engineering Selection by Compressor Model

Provide the full compressor designation (e.g. СБ4/С-100.LB30A) and our engineer confirms on the same day that the А1180 (4301104700) is correct for your specific model.

In Stock at the Chișinău Warehouse

Belts for LB30 and LB30A blocks are permanently in stock at acvatron.md. Collect on the day of payment — no waiting for transit shipments.

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 and oil sight glasses. Everything for maintenance and repair — in one place in Chișinău.

Documents for Legal Entities

All spare parts are supplied with accompanying documents. For legal entities — invoice and contract.

Applications

Scheduled Maintenance

• Belt replacement as part of planned servicing every 1,000–1,500 operating hours on СБ4/С-50.LB30 and СБ4/С-100.LB30 compressors
• Building an emergency spare parts kit: 1–2 А1180 belts in the workshop or service shop store
• Planned compressor shutdown with no unscheduled downtime

Emergency Repair

• Belt replacement after a snap in a garage, auto service shop or workshop
• Restoring compressor operation on the day of failure if the belt is in the spares kit
• Repair after transmission overheating due to incorrect tensioning

Service Organisations

• On-site maintenance of Remeza AirCast compressor fleets across Moldova
• Parts standardisation: one part number 4301104700 covers all LH20, LB24 and LB30 blocks
• Planned maintenance contracts with predictable consumable replacement

Expert Opinion

“The belt is an inexpensive part, but how you treat it determines whether you get a scheduled service or an unplanned breakdown. The main mistake is only changing the belt when it snaps. The right approach: inspect the belt every 250 operating hours for cracks, delamination and sidewall wear; replace preventively every 1,000–1,500 hours without waiting for a failure. Second point: after fitting a new belt, check the tension after 8–10 hours of running — a new belt undergoes initial stretch and needs re-tensioning. Belt deflection under a 5 kgf load applied at the midpoint of the span should be 10–15 mm for the LB30 block.”

Vitali Bolucevschi, Chief Engineer at Acvatron SRL, 15 years in the industry

Applicable standards and regulatory documents:

• GOST 1284-89 — classical V-belts for power transmission
• ISO 4184 — V-belts, profiles and dimensions
• DIN 2215 — V-belts (European standard)
• Remeza AirCast СБ4/С series operating manual: section “Maintenance”

How to Replace the А1180 Belt on an LB30 Block: 6-Step Procedure

1. Isolate the compressor from the mains — switch off the circuit breaker and confirm that receiver pressure has dropped to zero; remove the belt drive guard.
2. Release tension — loosen the motor mounting bolts on the slide rails and move the motor towards the block until the belt is fully slack.
3. Remove the old belt — avoid cutting the belt unnecessarily; keep it to assess the wear pattern (sidewall cracking — over-tensioned; glazed working surface — slipping).
4. Inspect the pulleys — check grooves for wear: maximum allowable wear depth is 2 mm; the lateral clearance between the belt and the groove edge must be at least 1.5 mm.
5. Fit the new А1180 belt (4301104700) — install the belt over both pulleys by hand without levers or pry bars; move the motor to tension the belt to the specified value: deflection 10–15 mm under a 5 kgf load at the mid-span.
6. Tighten motor mounting bolts and verify pulley alignment — place a straight edge against the faces of both pulleys: maximum misalignment 1 mm across the pulley width; start the compressor and check for the absence of squealing and vibration after 10–15 minutes of running.

Handling Objections

“I’ll buy any A46 — the size is the same”

A46 (Lw = 1168 mm) and А1180 (Lw = 1180 mm) are different belts with a 12 mm difference in calculated length. On the LB30 block with a fixed motor slide travel, an A46 may not achieve the required tension: the belt will slip, overheat and fail within 50–100 operating hours. Use only А1180 with Lw = 1180 mm.

“I’ll take a cheap unbranded equivalent”

The main risk of an unmarked cheap belt is unstable length: even with the correct profile A, a +20 mm deviation from Lw causes over-tensioning and accelerated wear of the LB30 crankshaft bearings. A belt with part number 4301104700 or 23611025 has a controlled length per GOST 1284-89 (tolerance +8/−4 mm).

“I can’t find the part number I need”

4301104700 is the current part number and is permanently in stock at Acvatron SRL in Chișinău. If you have 03010009 or 23611025 — it’s the same part: quote any of the three numbers and we will confirm compatibility.

FAQ

❓ How often should the belt on a Remeza LB30 compressor be replaced?

The planned service life of the drive belt for the LB30 block is 1,000–1,500 operating hours with correct tensioning and normal operating conditions (ambient temperature +5…+40 °C, protection from oil and aggressive vapours). Under intensive use (ED 80–100%) the interval shortens to 700–800 hours. Inspection: every 250 operating hours or quarterly.

❓ What is the difference between part number 4301104700 and 03010009?

Constructively — none. Both part numbers refer to the same А1180 (A46.5) drive V-belt, profile A, Lw = 1180 mm. The difference is only in the numbering system: 4301104700 is the current Remeza number; 03010009 is the earlier number used in first-series parts breakdowns. Both are accepted when placing an order.

❓ Does the А1180 belt fit the LB30A block (with the letter A)?

Yes. The LB30 and LB30A blocks are constructively identical in terms of the belt drive: the same pulley diameters and the same centre distance. The letter “A” in LB30A refers only to the automatic pressure-relief valve on shutdown — it has no effect on the drive belt. Part number 4301104700 (А1180) fits both variants.

Take the Next Step Right Now

A snapped belt during working hours means unplanned downtime and an urgent parts search. One belt in the spares kit eliminates this problem for good.

1. 📞 Call us — the Acvatron SRL engineer confirms that the А1180 (4301104700) belt is in stock in Chișinău and compatible with your compressor model.
2. 📋 Request a commercial quote — with part number, price and documents. For legal entities — invoice and contract.
3. 🛒 Place your order by phone or at our office — collect from the Chișinău warehouse on the day of payment.

Acvatron SRL — an engineering approach to every sale.