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QGRA 30 ring gauges

The QGRA 30 series gauges are primarily utilized to inspect tapered shaft seats intended for cylindrical roller bearings within the NN30K series. Additionally, shaft seats for bearings found in the NNU 49 BK and N 10 K series can also be verified using QGRA 30 series gauges. Specifically designed for tapered seats with diameters up to 200 mm, QGRA 30 ring gauges ensure accurate measurements in these applications. For tapered seats exceeding 200 mm in diameter, QIBR recommends using DMB taper gauges, as handling ring gauges of such size would pose practical challenges due to their weight. This approach ensures effective and reliable inspection across a broad range of bearing installation scenarios, maintaining precision and reliability in industrial settings.

Search for the bearing model you need

Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN/VDEh,DIN/VDEh

Product number

GRA 3005-GRA 3040

Bearing model

NN 3005 K-NN 3040 K

Seat diameter (da)

25.1mm-200.35

Seat diameter (db)

27mm-207mm

Seat distance (Bb)

4mm-20mm

Seat distance (Bc)

4.2mm-20.7mm

Mass ring gauge

0.13kg-15.00kg

Brand

QIBR/OEM/Neutral

Package

Standard Export Package

QIBR Model Selection

Filters

Bearing model

Mass

Seat diameter (da)

Seat diameter (db)

Width (B)

NO.	Product Number	Bearing model	Mass	Seat diameter (da)	Seat diameter (db)	Width (B)
1	QGRA 3005	NN 3005 K	0.13 kg	25.1 mm	27 mm	16 mm
2	QGRA 3006	NN 3006 KTN	0.18 kg	30.1 mm	32 mm	19 mm
3	QGRA 3007	NN 3007 K	0.21 kg	35.1 mm	37 mm	20 mm
4	QGRA 3008	NN 3008 KTN	0.26 kg	40.1 mm	42 mm	21 mm
5	QGRA 3009	NN 3009 KTN	0.31 kg	45.1 mm	47 mm	23 mm
6	QGRA 3010	NN 3010 KTN	0.34 kg	50.1 mm	52 mm	23 mm
7	QGRA 3011	NN 3011 KTN	0.42 kg	55.15 mm	57 mm	26 mm
8	QGRA 3012	NN 3012 KTN	0.45 kg	60.15 mm	62 mm	26 mm
9	QGRA 3013	NN 3013 KTN	0.51 kg	65.15 mm	67 mm	26 mm
10	QGRA 3014	NN 3014 KTN	0.69 kg	70.15 mm	73 mm	30 mm
11	QGRA 3015	NN 3015 KTN	0.73 kg	75.15 mm	78 mm	30 mm
12	QGRA 3016	NN 3016 KTN	0.88 kg	80.15 mm	83 mm	34 mm
13	QGRA 3017	NN 3017 KTN9	1.00 kg	85.2 mm	88 mm	34 mm
14	QGRA 3018	NN 3018 KTN9	1.30 kg	90.2 mm	93 mm	37 mm
15	QGRA 3019	NN 3019 KTN9	1.55 kg	95.2 mm	98 mm	37 mm
16	QGRA 3020	NN 3020 KTN9	1.70 kg	100.2 mm	103 mm	37 mm
17	QGRA 3021	NN 3021 KTN9	2.10 kg	105.2 mm	109 mm	41 mm
18	QGRA 3022	NN 3022 KTN9	2.60 kg	110.25 mm	114 mm	45 mm
19	QGRA 3024	NN 3024 KTN9	3.05 kg	120.25 mm	124 mm	46 mm
20	QGRA 3026	NN 3026 KTN9	3.95 kg	130.25 mm	135 mm	52 mm
21	QGRA 3028	NN 3028 K	4.75 kg	140.30 mm	145 mm	53 mm
22	QGRA 3030	NN 3030 K	5.60 kg	150.30 mm	155 mm	56 mm
23	QGRA 3032	NN 3032 K	6.80 kg	160.30 mm	165 mm	60 mm
24	QGRA 3034	NN 3034 K	8.80 kg	170.30 mm	176 mm	67 mm
25	QGRA 3036	NN 3036 K	11.50 kg	180.35 mm	187 mm	74 mm
26	QGRA 3038	NN 3038 K	13.00 kg	190.35 mm	197 mm	75 mm
27	QGRA 3040	NN 3040 K	15.00 kg	200.35 mm	207 mm	82 mm

Functions of QGRA 30 ring gauges

1. Dimension Measurement

Ensures that the dimensions of bearings conform to design specifications.

2. Angle inspection

Verifies that the taper angles meet production requirements, preventing bearing failures caused by assembly errors.

3. Quality control

Serves as part of production quality control, helping to check and verify the accuracy of products.