A. 측정목적:

 

--윤활유의, 전단 안전 특성 시험

--테이퍼 롤더 베어링으로 시험

--VI 개선(점도 지수 개선제 시험)

--모델 TE82나 TE92는 전단안정성 시험기 + 포볼 시험장치 + 회전식 핀온디스크 + 등등 다양한 시험 장치 모듈

 

B. 측정기기 특징;

--1,500RPM/5,000N/60도씨 도달하면은 TAPER ROLLER BEARING이 장치된 SHEAR TEST ADAPTOR를 시험 시작

   시키고, 시험 후, 열화된 윤활유 시험 샘플을 4/8/16/24시간 마다 꺼내어, 동점도계로, 100도씨의 상태에서 점도의 변화를

   측정하는 방식 이다.   혹은 40시간 연속 시험하여, 최종 동점도계로 점도 지수 변화 측정.

 

--모델 TE82S 이 시험기는 SHEAR TESTER 전용기 이고, 다른 버전인 TE82는 포볼+전단성+회전식 핀온디스크등 다양한 

   시험이 가능하고,  TE82버전은, 모든 시험환경이 PC에 의한 서보 피드백 제어 방식이나, 하중제어만 무게 추(DEAD

   WEIGHT) 적용 방식이다.

   모델 TE92는 시험환경 모두(하중/마찰속도/온도)을 완전자동형으로 제어하고, 공압에 의한 서보피드백 PC 하중 제어

   방식으로 아주  편하게 자동으로 혹은 PC 클릭에 의한 하중 증가 제어로 포볼 극압성 시험을 할 수 있다.

   TE82 기종에 비하여 시험환경을 전자동 PC 제어 하고, 추가로 다양한 시험이 아래와 같이 가능하다.

        

         추 가시험  항목  :   금속,세라믹등의 소재개발용 및 윤활제,그리스유등의 마찰마모윤활특성 평가및 마찰계수를 측정분석가능하며,                                       핀(볼)온디스크회전식(1,2,3Pins)/Ocillating/Taper Roller Bearing/KRL SHEAR 윤활전단성/LVFA 클러치/
                                      Pin on Vee Block/Block on RIng시험치구 적용/KRL SHEAR TEST등/VANE PUMP/RING & LINER 초고속 TEST/

                                      10,000rpm고속,  고토오크 옵션이 있습니다.

 

 

--MAX 30,000RPM의 초고속 베어링 소재 피로 시험기, 윤활유, 그리스유, 베어링,기어 RCF 구름접촉 피로 시험장치

   입니다.                           RCF 1 ROLLING CONTACT FATIGUE MACHINE

            

 

 

 

Keywords:

• shear stability test
• shear test on lubricants
• taper roller bearing
• VI improvers

Background:

The DIN 51350-6 (KRL taper roller bearing) test method is concerned with the determination of the mechanical shear stability of lubricating oils with polymer additives, such as gear oils, engine oils, damper oils and automatic transmission fluids. For this a taper roller bearing is used to shear the fluid. The purpose of the test is to determine the permanent drop in viscosity caused by mechanical stresses under practical conditions. In many cases companies require to have a machine dedicated to such tests and this does not warrant the cost of a multi-functional machine.

The TE 82S is manually controlled version of the TE 82. Tests may be run according to the following methods:

DIN 51350/6 Testing of Shear Stability of Lubricating Oils Containing Polymers

CEC L-45-T-93 Viscosity Shear Stability of Transmission Lubricants (Taper Roller Bearing Rig)

Description:

The machine frame comprises a base and top plate separated by two rigid vertical columns. This arrangement ensures accurate location of the test spindle housing with respect to the normal loading axis. The machine is bench-mounting and is supplied with a transparent safety cover and safety interlocks.

The test spindle projects downwards from the top plate and runs in a housing with precision greased for life bearings. The drive motor is also mounted on the top plate and is connected to a pulley on the test spindle by means of a timing belt.

The shear test assembly is mounted on a massive aluminium cross beam which is guided by linear bearings on the vertical machine columns. The beam is loaded from underneath by means of a loading arm with 20:1 lever ratio. This means that only 50 kg is required to achieve the highest machine load.

The test assembly comprises a threaded test reservoir, clamping nut, integral labyrinth for temperature control, torque arm and thermocouple sensor. The taper roller bearing is a standard commercial production bearing. The outer race locates into the test reservoir and the bearing is re-assembled. The clamping nut is screwed down by hand to hold the outer race.

A central hole in the clamping nut permits the inner race to be rotated by a driver that locates in the spindle taper. Although there is no torque measurement, the torque arm is used to prevent the test assembly rotating during the test.

A thermocouple is located in the clamping nut with the tip of the sensor protruding into the space just above the inner race which is normally flooded with lubricant. The temperature of the lubricant must be maintained at 60°C for the test. To achieve this control, the base of the test assembly is machined with a labyrinth of water passages and a temperature controlled recirculating water system is provided.

The recirculating system has a sump tank with integral electrical heater element, thermocouple, setpoint temperature controller and circulating pump. When cooling is required a thermostatic switch opens an inlet valve to the sump tank to take in mains water.

Instrumentation:

Variable speed drive with encoder feedback and digital speed display

Pre-set batch counter controlling the number of cycles completed (this is more precise than setting a speed and measuring time)

PID setpoint temperature controller with display for the recirculating system

K-type thermocouples for monitoring temperature in the test assembly and sump tank

Technical Specification:

Load Range:	500 to 10,000 N
Rotational Speed:	60 to 1,780 rpm
Taper Bearing:	SKF 32008 X/Q
Temperature Sensor:	k-type thermocouple
Sump Capacity:	35 litres
Heater Power:	3 kW
Pump Flow:	9 litres/minute at zero head
Temperature:	60°C
Motor:	2.2 kW ac

Services:

Electricity:	220/240V, single phase, 50 Hz, 3 kW
	110/120 V, single phase, 60 Hz, 3 kW
	Mains water and drain

Installation:

Bench-standing machine:	450 mm x 670 mm deep x 940 mm high, 250 kg
Bench-mounting cabinet:	530 mm x 420 mm x 450 mm high, 40 kg
Packing Specifications:	2.2 m3, GW 600 kg, NW 450 kg

Order As:

TE 82S

KRL (DIN 51350-6) Shear Stability Test Machine

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