V-Belt B2000 (B79) Remeza LT100 – for Compressors СБ4/Ф-500 LT100 and 4V-1.05/12.5, Profile B, Lw=2022 mm

The Problem You’ve Already Faced

• The compressor roars but pressure builds slowly or not at all. The belt has stretched and is slipping — power isn’t reaching the block, the motor runs unloaded and overheats.
• One belt snapped, the second “looks fine”. The temptation to replace just one is understandable. Result: the new one breaks in 200–300 hours, because it runs paired with a stretched belt.
• Three part numbers, but you only need one. 4301307900, 23621017 and 03010006 are the same belt across different Remeza catalogue editions from different years.
• Confused profile A with B. A profile-A belt (width 13 mm) looks similar to B (17 mm) on visual inspection but won’t seat correctly in LT100 pulleys — lateral contact is disrupted, the belt is destroyed in 100–150 hours.
• LT100 is a heavy block; belt load is higher. The four-cylinder two-stage LT100 block places significantly more load on the belt drive than LB30/LB40 units. Saving on belt quality here costs twice as much in the end.

Downtime on an industrial LT100 compressor due to a broken belt isn’t just the cost of the part — it’s the loss of an entire shift.

What Is the B2000 V-Belt for LT100 and 4V-1.05/12.5 Compressors

A V-belt is the flexible drive element of the belt transmission between the motor pulley and the piston block flywheel pulley. It transfers torque through wedge engagement in the pulley grooves.

Breaking down the B2000 designation:

• B — profile per GOST 1284.1-89: top face width 17 mm, height 11 mm, wedge angle 40°. Profile B is used on compressors with motor power from 5.5 kW upward, where drive loads exceed those acceptable for profile A
• 2000 — inner belt length Li = 2000 mm
• Lw = 2022 mm — pitch length per ISO 4184 / DIN 2215
• B79 — designation of the same belt in the ISO system (79 inches × 25.4 mm ≈ 2006 mm; standard market marking — B79 = B2000)

Three Remeza part numbers — one part:

• 4301307900 — current factory part number
• 23621017 — earlier catalogue number
• 03010006 — part number from an alternative components catalogue

Any of the three is sufficient when ordering — or simply state “B2000 for LT100.”

Compressor СБ4/Ф-500 LT100 — stationary four-cylinder two-stage Remeza (Belarus) piston compressor with belt drive on a horizontal 500 L receiver. Motor power 7.5–11 kW depending on variant (LT100/10 and LT100/16 bar). The LT100 block is of French manufacture (Lacme), rated for pressures up to 16 bar.

Compressor 4V-1.05/12.5 — four-cylinder V-type two-stage piston compressor, 7.5 kW, 12.5 bar, 1050 L/min, 300 L receiver, cast-iron cylinder liners, belt drive. Structurally similar belt drive loading — requires the same profile B at the same 2000 mm length.

Technical Specifications

💡 Expert tip: the LT100 block generates impact loads on the belt drive at every compression stroke — especially at high pressure (16-bar variant). This is precisely why profile B is used rather than A. When purchasing alternatives, check not only length and profile but also the belt load class: LT100 requires a classical V-belt cross-section, not a “light-duty” cogged or narrow belt. An undersized cross-section fails in 300–400 hours instead of 1,000+.

Cross-Reference by Brand

⚠️ Important: do not confuse B2000 with SPB2000 (narrow profile, width 16.3 mm, height 13 mm). SPB looks similar to B but the pulley groove geometry is different. LT100 and 4V-1.05/12.5 pulleys are machined for classical profile B — fitting SPB results in incorrect contact and accelerated pulley wear.

5 mandatory parameters to verify compatibility:

1. Profile B — top face width 17 mm, height 11 mm. Not A (13 mm), not SPB (16.3 mm), not BB.
2. Inner length Li — 2000 mm ± 9 mm per GOST. Deviation over 12 mm means the wrong belt.
3. Section type — classical (smooth flanks), not cogged/raw edge. LT100 pulleys are designed for smooth lateral faces.
4. Quantity — 2 pcs. from the same production batch. Mixing batches is not permitted.
5. Tension after fitting — free-side deflection at 10 N applied force: 12–18 mm per 100 mm of centre distance.

Why Acvatron SRL — 5 Solid Reasons

Selection by Model and Variant

The СБ4/Ф-500 LT100 was produced in 10-bar and 16-bar variants, with 7.5 and 11 kW motors — the B2000 belt is the same across all variants, but centre distances may differ. Our specialist confirms the year of manufacture and variant to eliminate errors.

Full Documentation

Every item ships with an invoice listing the manufacturer’s part number and customs tariff code. For companies maintaining maintenance records — a complete document package for expensing the consumable.

Stock in Chisinau

Belts for the main Remeza series (LB series, LT100) are held in permanent stock. Same-day dispatch for orders placed before 14:00.

Sold as a Matched Set

We supply 2 belts from the same production batch — as required by the LT100 and 4V-1.05/12.5 drive design. No need to source the second belt separately and risk a length mismatch.

Complete LT100 Parts Stock

Beyond belts — air filters, valves, piston rings, connecting rods, oil, pulleys — everything for routine maintenance and overhaul of the LT100 block. One request — one supplier.

Applications

Industrial Plants

• Centralised pneumatic lines serving multiple consumers
• Abrasive blasting of metal structures and surfaces
• Pneumatic press and clamping device supply

Automotive Service and Heavy-Vehicle Tyre Fitting

• Heavy vehicle tyre inflation (12.5 bar — sufficient for TIR trucks)
• Multi-bay spray painting booths
• Pneumatic lifts and tyre bead breakers

Construction and Road Works

• Pneumatic breaker and drill supply
• Shotcreting and mortar application
• Pneumatic fastening on assembly sites

Woodworking and Furniture Production

• Pneumatic panel gluing presses
• Nail and staple guns
• Lacquer and paint spray systems

Expert Opinion

“The LT100 is a heavy four-cylinder block, and its belt drive runs under significantly harsher conditions than LB30 or LB40 units. I see the same mistake every time: replace one belt, save on the second. Result: the new one breaks within a shift because it’s pulling for two. The second issue is tensioning. On the LT100, due to the block weight and load, people overtighten belts ‘just to be safe.’ Overtightening destroys the piston block bearings faster than the belt itself. Deflection of 12–18 mm per 100 mm of span — and leave it alone. That’s not intuition, that’s the service manual.”

Vitalie Bolucevski, Chief Engineer, Acvatron SRL — 15 years in the industry

Applicable standards:

• GOST 1284.1-89 — classical V-belts, standard cross-sections
• GOST 1284.2-89 — technical requirements
• ISO 4184 — classical V-belts
• DIN 2215 — V-belts, European standard
• GOST 12.2.016 — safety of compressor equipment

How to Select the Right V-Belt for Your Compressor: 5-Step Guide

1. Confirm the compressor model and variant. Both СБ4/Ф-500 LT100 and 4V-1.05/12.5 use the B2000. If you have a different LT100-series variant — confirm the centre distance: the belt is the same, but post-installation tension will differ.
2. Remove the old belt and measure. Inner circumference of the removed belt. If it has stretched — subtract 12–18 mm from the measured value to get the nominal size Li = 2000 mm.
3. Check the profile against the pulley. A profile-B belt in the pulley groove should protrude 1.5–2 mm above the flange rim. If it sits flush or below — the pulley is worn and must be replaced along with the belt.
4. Order 2 belts from the same batch. Both compressors have twin-groove drives. Single-belt replacement is economically unviable and technically harmful.
5. Set tension by deflection. Free-side mid-span deflection at 10 N applied force — 12–18 mm. Adjust motor position on the rails and lock the fasteners. Re-check tension after 8 hours of operation: new belts have an initial seating stretch.

FAQ

❓ What is the difference between part numbers 4301307900, 23621017, and 03010006?

These are three part numbers for the same part — the B2000 belt for the LT100 block — across different editions of the Remeza parts catalogue. The factory revised its numbering system twice; all three codes are current and accepted on orders. Any of the three is sufficient when ordering, or simply state “B2000 for LT100.”

❓ How many belts does a Remeza СБ4/Ф-500 LT100 or 4V-1.05/12.5 compressor require?

Two belts per compressor. Both the motor and block pulleys are twin-groove, designed for two parallel profile-B belts. Fitting a single belt in place of two is only acceptable as a temporary emergency measure to move equipment — not for continuous operation.

❓ Where can I buy a B2000 belt for the LT100 compressor in Moldova?

The B2000 belt (part numbers 4301307900 / 23621017 / 03010006) for Remeza СБ4/Ф-500 LT100 and 4V-1.05/12.5 compressors is in stock at Acvatron SRL, Chisinau. We sell in matched sets of 2 pcs. Contact us at acvatron.md or WhatsApp.