SPA 1180 OPTIBELT SK V-Belt 12.7x10 mm

Overview

The SPA 1180 OPTIBELT is a high-performance narrow V-belt from the optibelt SK S=C Plus series, designed for reliable power transmission in industrial belt drives.

The SPA profile has a nominal top width of approximately 12.7 mm and a height of 10 mm, while 1180 indicates the reference length of the belt.

Its wrapped construction provides durable running surfaces and reliable interaction with V-belt pulleys. The optibelt SK series is designed for efficient power transmission in electric motor drives, pumps, fans, compressors, conveyors and general industrial machinery.

Industrial Applications

The SPA 1180 OPTIBELT is suitable for:

• Electric motor drives
• Pumps
• Industrial fans
• Blowers
• Compressors
• Conveyor systems
• Belt transmissions
• Agricultural machinery
• Manufacturing equipment
• General industrial machinery

OPTIBELT SK Series

optibelt SK is a high-performance narrow V-belt series developed for industrial power transmission.

The series combines standardized dimensions with high operating efficiency and reliable running characteristics.

Key characteristics include:

• High power transmission capability
• Wrapped construction
• Standardized SPA profile
• High efficiency
• S=C Plus length consistency
• Suitability for multiple-belt drives

In correctly designed belt drives, efficiency can reach approximately 97%.

SPA Narrow V-Belt Profile

The SPA designation identifies a standardized metric narrow V-belt profile.

Nominal cross-section:

Top Width: approx. 12.7 mm

Height: approx. 10 mm

The narrow profile enables efficient power transmission within compact drive dimensions and provides higher performance compared with many conventional classical V-belt profiles.

SPA 1180 Reference Length

The designation 1180 identifies the nominal reference length:

Reference Length Ld / Lw: 1180 mm

The reference length should not be confused with the inside or outside circumference of the belt.

When selecting a replacement, using the complete SPA 1180 designation is recommended rather than measuring only the outside circumference of a used belt.

S=C Plus Length Consistency

The optibelt SK series uses the S=C Plus system.

This provides very tight manufacturing tolerances for belt length, allowing belts with the same nominal designation to be installed together in multiple-belt drives without additional length matching.

This is particularly important in drives using two, three or more belts in parallel, where uniform load distribution between individual belts is required.

Wrapped Construction

The SPA 1180 OPTIBELT SK uses a wrapped V-belt construction.

The fabric cover protects the belt body and the surfaces operating against the pulley grooves.

The wrapped design provides:

• Good abrasion resistance
• Stable belt guidance
• Reliable power transmission
• Consistent pulley engagement
• Durability in industrial operation

Operating Temperature

OPTIBELT specifies a standard operating temperature range for the optibelt SK series of:

-40°C to +70°C

Actual belt operating conditions also depend on pulley diameter, belt speed, transmitted power, ambient conditions, ventilation and correct belt tension.

Standards

The optibelt SK SPA series complies with recognized international dimensional standards for high-performance narrow V-belts.

DIN: DIN 7753-1

ISO: ISO 4184

The standardized SPA profile facilitates use with compatible industrial V-belt pulleys.

Technical Specification

Manufacturer: OPTIBELT

Product Series: optibelt SK S=C Plus

Designation: SPA 1180

Product Type: V-belt

Belt Type: High-performance narrow V-belt

Construction: Wrapped

Profile: SPA

Nominal Top Width: approx. 12.7 mm

Nominal Height: approx. 10 mm

Reference Length Ld / Lw: 1180 mm

DIN Standard: DIN 7753-1

ISO Standard: ISO 4184

Length Matching System: S=C Plus

Drive Efficiency: up to approx. 97%

Minimum Operating Temperature: -40°C

Maximum Operating Temperature: +70°C

Measurement System: Metric

SPA 1180 OPTIBELT Designation Explained

SPA - metric high-performance narrow V-belt profile

1180 - 1180 mm reference length

OPTIBELT - manufacturer

SK - high-performance wrapped V-belt series

S=C Plus - precise length consistency for use in multiple-belt drives without additional length matching

The complete designation is important when selecting a replacement belt or designing an industrial power transmission system.

Power Transmission

The SPA profile transmits mechanical power through friction between the belt sidewalls and the grooves of the V-belt pulley.

Correct belt tension enables efficient torque transmission while reducing slip, heat generation and premature belt wear.

For higher power requirements, multiple SPA belts can be operated in parallel on multi-groove pulleys.

Multiple-Belt Drives

Thanks to the S=C Plus system, SPA 1180 OPTIBELT belts with the same nominal designation can be used together in multiple-belt drives.

Uniform belt dimensions help distribute the transmitted load evenly across the complete belt set.

When replacing belts in a multiple-belt drive, replacing the complete set is recommended rather than combining heavily used belts with new ones.

Operational Advantages

• High-performance SPA narrow profile.
• 1180 mm standardized reference length.
• S=C Plus system for multiple-belt drives.
• Drive efficiency up to approximately 97%.
• Operating temperature range from -40°C to +70°C.
• Compliance with DIN 7753-1 and ISO 4184.

Replacement and Belt Selection

When replacing an SPA 1180 OPTIBELT, verify:

• SPA profile
• 1180 mm reference length
• Pulley groove profile
• Number of belts in the drive
• Required transmitted power
• Rotational speed
• Pulley diameters
• Operating temperature
• Correct installation tension

A replacement belt should not be selected solely by measuring the outside circumference of the old belt because V-belt inside, outside and reference lengths are different values.

AI OVERVIEW

The SPA 1180 OPTIBELT SK S=C Plus is a high-performance wrapped narrow V-belt with an approximately 12.7x10 mm SPA profile and 1180 mm reference length. Designed for industrial power transmission, it complies with DIN 7753-1 and ISO 4184, operates from -40°C to +70°C and supports matched multiple-belt drives through the S=C Plus system.

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FAQ

What is the SPA 1180 OPTIBELT?

It is a high-performance narrow V-belt designed for industrial power transmission systems.

What does SPA mean?

SPA identifies the standardized metric narrow V-belt profile.

What is the cross-section of an SPA belt?

The nominal SPA profile is approximately 12.7 mm wide and 10 mm high.

What does 1180 mean?

1180 identifies the belt's 1180 mm reference length.

Is 1180 mm the inside length of the belt?

No. The SPA 1180 designation refers to the reference length. Inside and outside belt lengths are different.

What series does this belt belong to?

The belt belongs to the optibelt SK S=C Plus series.

What does S=C Plus mean?

S=C Plus indicates high manufacturing accuracy for belt length, allowing belts with the same nominal designation to be used together in multiple-belt drives without additional length matching.

Can several SPA 1180 belts operate together?

Yes. The S=C Plus system is specifically advantageous in multiple-belt drive arrangements.

What is the efficiency of an OPTIBELT SK drive?

OPTIBELT specifies efficiency of up to approximately 97% for correctly designed belt drives.

What is the operating temperature range?

The standard operating temperature range is -40°C to +70°C.

Is the SPA 1180 a wrapped V-belt?

Yes. The optibelt SK SPA is a high-performance wrapped narrow V-belt.

Which standards apply to the SPA profile?

The series complies with DIN 7753-1 and ISO 4184.

Where is SPA 1180 commonly used?

Typical applications include pumps, fans, compressors, conveyors, electric motor drives, agricultural machinery and general industrial equipment.

Is SPA a classical V-belt profile?

No. SPA belongs to the high-performance narrow V-belt profile family.

Can another manufacturer's SPA 1180 replace the OPTIBELT belt?

A belt with the same standardized profile and reference length may be dimensionally compatible, but its performance characteristics and application requirements should also be verified.

Does belt tension affect service life?

Yes. Correct tension is essential for efficient power transmission, reduced slip and proper belt service life.

Should old and new belts be mixed in a multiple-belt drive?

It is generally preferable to replace the complete belt set to maintain uniform load distribution.

Does SPA 1180 require a specific pulley profile?

Yes. The pulley grooves must be suitable for the SPA narrow V-belt profile.

What is the parent product category?

The correct industrial parent category is Narrow V-Belts.

Who manufactures the SPA 1180 belt?

The described belt is manufactured by OPTIBELT.