Type 60 SPAT Gun

The Type 60 Self-propelled 106 mm Recoilless Gun is a light anti-tank vehicle developed by Japan in the late 1950s. It mounts two M40 106 mm recoilless rifles as its main armament.

Type 60 SPAT Gun
Class Vehicle
Type Self-Propelled artillery
Manufacturer Komatsu Limited
Production Period 1960 - 1977
Origin Japan
Country Name Origin Year
Japan 1960
Country Name Operational Year Retirement Year
Japan 1960 2008 View
ManufacturerName Production From Production To Quantity
Komatsu Limited 1960 1977 252 View

In the mid-1950s the Japan Ground Self-Defense Force contracted for one prototype from Komatsu (SS1) and Mitsubishi Heavy Industries (SS2) powered by a 110 hp six-cylinder diesel engine and fitted with two 105-millimeter (4.1 in) recoilless rifles. They were delivered in 1956. A second series of prototypes was built with 4 recoilless rifles, but adoption of the American M40 forced the reversion to two weapons. A third series of three prototypes was built by Komatsu as the SS4 that were heavier with a more powerful engine, a new transmission and clutch and a two-speed auxiliary transmission. They were accepted into service in September 1960.

Starting in 1974 a 150 hp Komatsu SA4D105 air-cooled, 4-cylinder diesel engine was fitted.

The commander is seated to the left of the two weapons and his position is attached to their mounting so that he remains at the same height when they are elevated for firing. The M40s can be fired from the lowered position, but their traverse is limited to 20°, elevation to +10° and depression to -5°. The elevation mechanism is manually operated. The loader is seated to the left of the commander and must exit through his rear-opening hatch to reload the recoilless rifles while on top of the engine deck or behind the vehicle.

Only 6 rounds of ammunition are stowed on board.

As of 2001, Japan reported to the United Nations Office for Disarmament Affairs that 140 Type 60s were in service.

GENERAL INFORMATION
DesignationsType 60
Manufacturer(s)Komatsu
StatusProduction complete. Phased out of service with Japan.
Production Period1960-1977Production Quantity252
TypeSP anti-tank gunCrew3
Length, overall4.3mLength, hull4.3m
Width, overall2.2mHeight, overall1.6m
Combat Weight8000kgUnloaded Weight7600kg
Radio, externaln/aCommunication, crewn/a
FIREPOWER
Main Armament2 x 106mm recoilless rifleAmmunition Carried8x106mm
Gun Traverse30 (left, right) (1)Elevation/Depression+15/-20 (1)
Traverse RatemanualElevation Ratemanual
Gun StabilizationnoneRangefinder12.7mm MG
Night VisionnoAuto-Loaderno
Secondary ArmamentnoneAmmunition Carried-


MOBILITY CHARACTERISTICS
EngineKomatsu 6T 120-2 air-cooled 6-cylinder diesel (2)Transmissionmanual (4 forward, 1 reverse)
Horsepower150hp at 2400rpmSuspensiontorsion bar
Power/Weight Ratio15hp/tTrack Width260mm
Speed, on road45km/hTrack Ground Contact2.3m
Fuel Capacity140 lGround Pressure0.67kg/cm2
Range, on road250kmGradient60%
Fuel Consumptionn/aVertical Obstacle0.6m
Turning Radiusn/aTrench Crossing1.8m
Ground Clearance0.35mFording0.7m
SURVIVABILITY FEATURES
Smoke Layingn/aNBC Protectionno
Armor DetailsWeld and riveted steel construction. Maximum armor thickness is 12mm.
TECHNICAL DRAWINGS AND OTHER IMAGES
NOTES
(1) Weapons in elevated position. When lowered the rifes have a traverse of 10 left and right and an elevation/depression of +10/-5. (2) Starting in 1974 the Komatsu SA4D105 air-cooled 6-cylinder diesel engine was fitted to new production vehicles. This engine developed 150hp at 2800rpm.
REFERENCES
JAA03

End notes