Hela

The 1974 novelty D 634 was the successor to the D 534. The MWM engine was a 2-cylinder 2.1-liter instead of the predecessor’s 3-cylinder. The Hela gearbox was a new 8+2-speed, and the road speed had increased to 28 km/h.

For 1978, the D 634’s engine was replaced with an air-cooled 3-cylinder. A year later, the model designation changed to D 635 L when the gearbox was changed to 10+2-speed.

In 1977, after a short break, Hela introduced a small tractor. The 24-horsepower D 424 had a 2-cylinder 1.5-liter MWM engine and Hela’s 6+2-speed gearbox.

In 1978, the construction machinery group IBH, which also owned Zettelmeyer, became the owner of Hela. Tractor production ended at the beginning of 1980, and the factory continued manufacturing the Zetcat small loader. In total, just over 30,000 Hela tractors were produced.

Tractors

Hela D 424, D 634 - D 635

The last of the Hela tractor generation was started with the D 542 in 1972. All engines were now manufactured by MWM. The D 542 initially had a 2.6-liter and later a 3.1-liter 3-cylinder engine. The transmission was Hela’s 10+2. Hydrostatic steering was available as an option, and the power take-off was 2-speed, but otherwise, the latest features were not included in the equipment. Besides green and red, orange was also available as a color option. A 50-horsepower model D 546 was made for France.

The D 648 A was a 48-horsepower four-wheel drive model. Its 16+8 transmission and front axle were sourced from Steyr.

The last new Hela model was the D 255 introduced in 1978, a 3-cylinder 55-horsepower model available with rear-wheel and four-wheel drive. The 16+8 transmission made by Steyr was partially synchronized.

Production of these models remained under a total of 1,000 units. Exports were limited to individual units, mainly to France and the Benelux countries.

Hela D 542, D 648, D 255

Introduced in 1968, the D 532 was the successor to the D 230 model. The Hela engine was replaced by a 3-cylinder 2.2-liter MWM. The 6+2 gearbox was available in either 20 or 25 km/h versions. The same model was exported to France and Belgium with power increased to 35 horsepower.

The D 527 replaced the earlier D 225. The 2.2-liter Hela engine was replaced by a 1.5-liter high-speed MWM. The 20 km/h version had 24 hp and the 25 km/h version 27 hp.

The D 340 A was a 40 hp four-wheel-drive tractor equipped with a 2.2-liter MWM. The 8+4 gearbox and front axle were produced by ZF. Power transmission to the front axle ran on the left side of the engine.

From these models onwards, Hela reported the tractor height up to the steering wheel, following the practice of other manufacturers. A selling point in advertisements was that the tractors featured powder coating, available in either red or green.

Hela D 527 - D 532, D 340

The D 540 and D 548 were the first Hela models equipped with the new two-part grille in 1965. These models, powered by a 3-cylinder Hela engine, were closely related to the D 138 and D 45. The most significant difference was the new Hela 9+4 gearbox, offering speeds from 0.7 to 27.4 km/h. Aside from engine power, the only other difference between the models was the tire size. The lift capacity of the lifting device with Bosch hydraulics was rated at 1600 kg.

In 1966, the D 254 was introduced, equipped with a 54-horsepower 4-cylinder MWM engine. Its gearbox was a ZF 8+4. The D 254 was the first Hela tractor available with four-wheel drive. The four-wheel-drive model featured hydrostatic steering.

Between 1969-71, a few D 254 tractors were also produced with a 3.4-liter 60 hp engine.

In 1970, the actual 60 hp production model D 260 was introduced. It had the same MWM engine but a ZF 16+8 gearbox. The rear-wheel-drive model remained more popular than the four-wheel-drive. In 1974, the D 260's engine increased to 4.2 liters and 70 horsepower.

Hela D 540 – D 548, D 254 - D 260

The 1960 D 38 was the successor to the D 36. Like many other Hela models, the wheelbase was extended. The engine was a 3-cylinder 3.2-liter Hela pre-chamber diesel. The transmission was more robust than before. The standard number of gears remained 6+1. A dual clutch was available as an option. The lifting device featured a draft control system.

In the D 45, power was increased by raising the engine speed. There were two reverse gears, and the power take-off offered two speeds as well as a ground-driven PTO. These features were also present in the D 138, which replaced the D 38 in 1963.

These models remained in production until 1967, so the appearance was updated for 1966.

Hela D 38 - D 45, D 138

The models introduced in 1960 featured a new hood design and Helan’s 2-cylinder 2.2-liter prechamber diesel engine. Compared to the D 30 model, new features included ZF’s 8+4 gearbox, live power take-off, and weight transfer system. The ZF gearbox, used in many German tractors, had 2 ranges and reverse, making direction changes easy. These models were overshadowed by the lighter D225/230 models with the same power and were quickly discontinued.

Hela D 124 - D 130

Introduced in 1961, the D 225 was the successor to the successful D 24. The wheelbase had been extended by 20 centimeters. There were now two reverse gears, and the lifting device based on Bosch hydraulics featured a weight transfer system. The PTO speeds were 560 and 980.

Alongside it, a more powerful version, the D 230, was introduced. The engine was the same 2.2-liter Hela and the transmission 6+2. In addition to the higher power, the differences from the smaller model included a dual clutch and larger front tires. As an alternative to the traditional 20 km/h top speed, there were gear ratios enabling a faster 25 km/h.

In 1964, the lightweight 3-cylinder D 434 and D 438 were introduced, with the latter intended only for export markets. Export markets referred to West European neighboring countries of Germany. The engine was a 2.2-liter MWM and the transmission a Hela 6+2. A dual clutch was standard, and the PTO featured two speeds and a live PTO. The parallel model to the D 434 was the D 534 with a Hela 2-range 10+2 transmission. The D 538, in turn, was the more powerful export version of the same tractor. The power of both increased to 40 horsepower in 1970.

Hela D 225 – D 230, D 434 – D 438, D 534 – D 538 

More from this manufacturer

The 1952 D 28 was a redesigned version of the earlier D 47 and D 28 models. The engine was now a 2.4-liter MWM, and the gearbox was still a 5+1 from in-house production. A small number were also produced with an air-cooled Deutz F2 L 514 engine. A larger share of D 28 production was sold for export compared to the rest of the lineup. Tractors exported to Turkey were yellow, and orange was also used in export markets.
The D 32, introduced at the same time, was a more powerful version. It had a 2.85-liter, 32-horsepower engine. It is known that three units of this model were imported to Finland. These demonstration tractors and the D 28 tested by Vakola remained the only Hela tractors in Finland.
The most powerful model, the D 40, was the first 3-cylinder Hela. The MWM engine was 3.5 liters. The gearbox was a ZF 6+1.

The 1952 D 28 was a redesigned version of the earlier D 47 and D 28 models. The engine was now a 2.4-liter MWM, and the gearbox was still a 5+1 from in-house production. A small number were also produced with an air-cooled Deutz F2 L 514 engine. A larger share of D 28 production was sold for export compared to the rest of the lineup. Tractors exported to Turkey were yellow, and orange was also used in export markets.

The D 32, introduced at the same time, was a more powerful version. It had a 2.85-liter, 32-horsepower engine. It is known that three units of this model were imported to Finland. These demonstration tractors and the D 28 tested by Vakola remained the only Hela tractors in Finland.

The most powerful model, the D 40, was the first 3-cylinder Hela. The MWM engine was 3.5 liters. The gearbox was a ZF 6+1.

Hela D 28

Malli

Hinta (sis. alv)

Series specifier

Manufacturer name

Model specifier

Imported to Finland

Years

First year sold

Last year sold

Engine model

Cyl/Turbo/Intercooler

Displacement

Bore x stroke

Power

Power speed

Rated power hp/rpm DIN

Rated power

Rated speed

Max power hp/rpm DIN

Max power

Max speed

Rated power hp/rpm ISO

Max power hp/rpm ISO

Max power hp/rpm

Rated power hp/rpm ECE

Max power	hp/rpm ECE

Rated power hp/rpm SAE

Rated power hp/rpm PTO

Rated power hp/rpm engine pulley

Rated power hp/rpm

Torque Nm/rpm

Torque Nm/rpm ECE

Torque Nm/rpm ISO

Torque Nm/rpm SAE

Torque Nm/rpm DIN

Gears

Creeper speeds

Synchronized gears

Powershift gears

Reverser

Speeds in km/h

Max. speed 

Hydr. flow l/min

Hydraulic pressure

Lift controls

Lift capacity

PTO speeds

Brakes

Steering

Turning circle m 2WD

Turning circle m 4WD

Front tyres 2WD

Front tyres 4WD

Rear tyres 2WD

Rear tyres 4WD

Weight 2WD

Weight 4WD

Height with cab

Length (2WD/4WD)

Wheelbase (2WD/4WD)

Fuel tank

Cab noise level

Solid cab

Diff. lock

Autom. differential locks

Air suspension seat

Air conditioning

Trip computer

Creeper gear

Sylinterien lukumäärä

Iskutilavuus

Iskusuhde

Suurin vääntömomentti, Nm

Suurin vääntömomentti, r/min

Vääntömomentin nousu

Polttonesteen kulutus suurimman tehon pisteessä

Kytkimen tyyppi

Ajovoimanotto

Nopeus eteenpäin moottorin nimellisnopeudella, pienin

Nopeus eteenpäin moottorin nimellisnopeudella, suurin

Jarrut

Hydrauliikan suurin paine

Hydrauliikan suurin tuotto

Nostolaitehydrauliikan hallinta

Ulkopuolinen hydrauliikka, venttiililohkoja

1-toimisia

2-toimisia

Nostovoima (kN=100 kg)

Hydrauliikan tyyppi

Kääntöympyrän halkaisija ilman ohjausjarrua

Eturenkaat

Takarenkaat

Kokonaismassa säiliöt täynnä vakiovarustein

Etuakselipaino

Taka-akselipaino

Suurin korkeus (ohjaamon ylimpään kohtaan)

Hela D 32

Hela D 40

Hela D 28 - D 40

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Uutiset

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Lehdet

Konedata

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Model	Hela D 28	Hela D 32	Hela D 40
Options
Imported to Finland	No	Yes	No
Years	1951-57	1951-56	1952-59
First year sold	1951	1951	1952
Last year sold	1957	1956	1959
Engine model	MWM KDW 415 Z	MWM KDW 515 Z / 715 Z	MWM KDW 415 D
Cyl/Turbo/Intercooler	2	2	3
Displacement	2356 cm³	2850 cm³	3534 cm³
Bore x stroke	100x150 mm	110x150 mm	120x150 mm
Rated power hp/rpm DIN	28/1500	32/1600	40/1500
Rated power	28	32	40
Rated speed	1500	1600	1500
Gears	5+1	5+1	5+1/6+1
Speeds in km/h	3,5-20,0	3,5-20,0	1,8-20,0
Lift controls	(mek.)	(mek.)	(mek.)
Lift capacity	800 kg	800 kg	-
PTO speeds	540	540	540
Brakes	paisuntaj.	paisuntaj.	paisuntaj.
Steering	mek.	mek.	mek.
Turning circle m 2WD	7,0	7,0	8,0
Front tyres 2WD	6.00-16	6.00-16	6.00-20
Rear tyres 2WD	10.00-28	10.00-28	13-30
Weight 2WD	(1670) kg	(1800) kg	(2400) kg
Height with cab	(150) cm	(150) cm	(156) cm
Length (2WD/4WD)	290 cm	290 cm	340 cm
Wheelbase (2WD/4WD)	180 cm	184 cm	205 cm
Fuel tank	37 l	37 l	60 l
Creeper gear	option	option	option